Article(id=1224795108248277570, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795106042073653, articleNumber=null, orderNo=null, doi=10.12284/hyxb2022046, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1631894400000, receivedDateStr=2021-09-18, revisedDate=1636214400000, revisedDateStr=2021-11-07, acceptedDate=null, acceptedDateStr=null, onlineDate=1769943509399, onlineDateStr=2026-02-01, pubDate=1645977600000, pubDateStr=2022-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769943509399, onlineIssueDateStr=2026-02-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769943509399, creator=13701087609, updateTime=1769943509399, updator=13701087609, issue=Issue{id=1224795106042073653, tenantId=1146029695717560320, journalId=1149651085930835976, year='2022', volume='44', issue='2', pageStart='1', pageEnd='76', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769943508872, creator=13701087609, updateTime=1769995878386, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1225014759771226150, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795106042073653, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1225014759771226151, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795106042073653, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=11, endPage=20, ext={EN=ArticleExt(id=1224795108629959238, articleId=1224795108248277570, tenantId=1146029695717560320, journalId=1149651085930835976, language=EN, title=Modified method of separation and purification of U, Th in coral sample with UTEVA resin, columnId=1194652705852465724, journalTitle=Haiyang Xuebao, columnName=Article, runingTitle=null, highlight=null, articleAbstract=
Corals are one of the carriers for recording information about changes in the marine environment. For example, determining U/Ca to reconstruction of sea water temperature or measure the Th/U isotopic ratio for dating to reconstruction sea level etc. However, measuring the U and Th contents and isotopic ratio of corals is a prerequisite for extracting the recorded marine environmental change information, the difficulty lies in the separation of Ca matrix and enrichment and purification of trace U and Th. Based on this, this study modified the pretreatment method of separation and purification U and Th with single column stage of UTEVA resin, and then combined with high resolution inductively coupled plasma mass spectrometry to determine U and Th contents of corals. The results demonstrate that the HNO3 medium concentration decrease from 3 mol/L to 2 mol/L will not affect the absorption efficiency of U and Th; 2 mL Milli-Q water can completely elute U, which significantly reduces the procedure blank value of the entire process of U; the improved method is used to determine the U and Th contents of three Hainan littoral corals (n=6, 1σ): U are (3.46±0.02)μg/g, (2.67±0.05)μg/g, (2.15±0.07)μg/g, respectively, Th are (10.12±0.24)ng/g, (4.82±0.10)ng/g, (5.65±0.12)ng/g, respectively; and the determination accuracy is below 3.3%, recovery rate of standard addition of U, Th are 97.9%–100.9%, 97.3%–99.7%, respectively. The method has high accuracy and good precision. This study provides a more accurate, convenient and rapid experimental method for the analysis of U and Th content and isotopic ratio in corals and other carbonate samples.
, correspAuthors=Jianguo Qu, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2022 Pratacultural Science. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Zhenyu Tang, Jianguo Qu, Anyu Zhang, Xiubao Li, Jinzhou Du), CN=ArticleExt(id=1224795112220283519, articleId=1224795108248277570, tenantId=1146029695717560320, journalId=1149651085930835976, language=CN, title=UTEVA树脂分离纯化珊瑚中铀、钍的改进研究, columnId=1149698756456657529, journalTitle=海洋学报, columnName=论文, runingTitle=null, highlight=null, articleAbstract=
珊瑚是记录海洋环境变化信息的载体之一,测定其U/Ca比值可重建海水温度或测定Th/U同位素比值可计算年龄重建海平面高度等。准确测定珊瑚中U、Th含量及同位素比值是提取所记载的海洋环境变化信息的前提,其难点在于高Ca基体分离和痕量U、Th富集纯化。基于此,本研究拟采用UTEVA树脂改进了一步富集分离珊瑚中U、Th的前处理方法,并联合高分辨电感耦合等离子体质谱仪测定U、Th含量。结果证明:上样介质HNO3浓度由3 mol/L降至2 mol/L不影响U、Th的吸附效率,用2 mL Milli-Q水可将U完全洗脱,U、Th的全流程空白值(mean±1σ, n =12)分别为(1.32±0.65) pg、(2.05±0.63)pg,显著降低了U的全流程空白值。测定了3个海南滨珊瑚中U含量(mean±1σ,n=6),分别为(3.46±0.02 )μg/g、(2.67±0.05)μg/g、(2.15±0.07)μg/g,Th含量(mean±1σ,n=6)分别为(10.12±0.24)ng/g、(4.82±0.10)ng/g、(5.62±0.12)ng/g,测定精度均在3.3%以内,U、Th加标回收率分别为97.9%~100.9%、97.3%~99.7%,方法准确度高,精密度好。本研究可为测定珊瑚等碳酸盐类样品中U、Th含量及其同位素提供准确、简便和快速的样品前处理方法。
, correspAuthors=瞿建国, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《海洋学报》编辑部 2022
汤震宇,瞿建国,张安余,等. UTEVA树脂分离纯化珊瑚中铀、钍的改进研究[J]. 海洋学报,2022,44(2):11–20Tang Zhenyu,Qu Jianguo,Zhang Anyu, et al. Modified method of separation and purification of U, Th in coral sample with UTEVA resin[J]. Haiyang Xuebao,2022, 44(2):11–20
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汤震宇(1993—),男,江西省鄱阳县人,主要从事痕量U、Th浓度及同位素比值方法开发。E-mail: zytang93@163.com
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汤震宇(1993—),男,江西省鄱阳县人,主要从事痕量U、Th浓度及同位素比值方法开发。E-mail: zytang93@163.com
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Lophelia pertusa[J]. Chemical Geology, 2013, 352: 143−152., articleTitle=null, refAbstract=null), Reference(id=1225365920256799265, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=36, rfOrder=40, authorNames=null, journalName=null, refType=null, unstructuredReference=Shao Qingfeng, Ge Junyi, Ji Qiang, et al. Geochemical provenancing and direct dating of the Harbin archaic human cranium[J]. The Innovation, 2021, 2(3): 100131., articleTitle=null, refAbstract=null), Reference(id=1225365920349073959, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=37, rfOrder=41, authorNames=null, journalName=null, refType=null, unstructuredReference=Clark T R, Roff G, Zhao Jianxin, et al. Testing the precision and accuracy of the U-Th chronometer for dating coral mortality events in the last 100 years[J]. Quaternary Geochronology, 2014, 23: 35−45., articleTitle=null, refAbstract=null)], funds=[Fund(id=1225365913436860645, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, awardId=2019RCDW04,SKLEC-KF201907, language=CN, fundingSource=河口海岸学国家重点实验室开放课题(2019RCDW04,SKLEC-KF201907), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1225365899830538836, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, xref=null, ext=[AuthorCompanyExt(id=1225365899893453399, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365899830538836, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China), AuthorCompanyExt(id=1225365899918619225, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365899830538836, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.华东师范大学 河口海岸学国家重点实验室,上海 200241)]), AuthorCompany(id=1225365900119945823, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, xref=null, ext=[AuthorCompanyExt(id=1225365900153500257, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365900119945823, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Thermo Fisher Scientific (China) Limited Company, Shanghai 200125, China), AuthorCompanyExt(id=1225365900170277474, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365900119945823, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.赛默飞世尔科技(中国)有限公司,上海 200125)]), AuthorCompany(id=1225365900472267370, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, xref=null, ext=[AuthorCompanyExt(id=1225365900489044587, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365900472267370, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3. State Key Laboratory of Marine Resource Utilization in South China Sea, College of Marine Science, Hainan University, Haikou 570228, China), AuthorCompanyExt(id=1225365900530987628, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, companyId=1225365900472267370, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3.海南大学 海洋学院 南海海洋资源利用国家重点实验室,海南 海口 570228)])], figs=[ArticleFig(id=1225365907690664884, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 1, caption=
The flow of U, Th separation and purification in coral sample, figureFileSmall=lXOAsNtyNgEWMRTfiRRrqQ==, figureFileBig=oaGc4eRntp3IMCGd8+Clrg==, tableContent=null), ArticleFig(id=1225365907803911108, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图1, caption=
珊瑚样品中U、Th分离纯化流程, figureFileSmall=lXOAsNtyNgEWMRTfiRRrqQ==, figureFileBig=oaGc4eRntp3IMCGd8+Clrg==, tableContent=null), ArticleFig(id=1225365908017820629, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 2, caption=
The effect of HNO3 concentration on U, Th absorption efficiency, figureFileSmall=v4mmKzxzYIaLIrG8oCunHg==, figureFileBig=dSBdflJl0nsFxLiDnaWcPg==, tableContent=null), ArticleFig(id=1225365908185592803, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图2, caption=
HNO3浓度对U、Th吸附效率的影响, figureFileSmall=v4mmKzxzYIaLIrG8oCunHg==, figureFileBig=dSBdflJl0nsFxLiDnaWcPg==, tableContent=null), ArticleFig(id=1225365908395308018, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 3, caption=
The effect of HCl concentration on the U, Th elution efficiency, figureFileSmall=HxYYa4rVp7iYhxFu8gh71g==, figureFileBig=F0AlTVpW//QiV1Kuz79qfQ==, tableContent=null), ArticleFig(id=1225365908571468797, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图3, caption=
HCl浓度对U、Th洗脱效率的影响, figureFileSmall=HxYYa4rVp7iYhxFu8gh71g==, figureFileBig=F0AlTVpW//QiV1Kuz79qfQ==, tableContent=null), ArticleFig(id=1225365908705685508, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 4, caption=
The effect of HCl concentration on U elution efficiency, figureFileSmall=ypIbyXFx6hcEBpEXbzZMxw==, figureFileBig=sy7S7Lgiazb+MS9IBHXBuQ==, tableContent=null), ArticleFig(id=1225365908902817810, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图4, caption=
HCl浓度对U洗脱效率的影响, figureFileSmall=ypIbyXFx6hcEBpEXbzZMxw==, figureFileBig=sy7S7Lgiazb+MS9IBHXBuQ==, tableContent=null), ArticleFig(id=1225365909074784285, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 5, caption=
The efficiency of matrix elements washing and separation, figureFileSmall=hqi6LGbxf+dDsdqqOB4Uow==, figureFileBig=ygx9K8smTcnjyCHxAcVSKg==, tableContent=null), ArticleFig(id=1225365909334831149, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图5, caption=
基体元素的清洗及分离效果, figureFileSmall=hqi6LGbxf+dDsdqqOB4Uow==, figureFileBig=ygx9K8smTcnjyCHxAcVSKg==, tableContent=null), ArticleFig(id=1225365909506797626, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Fig. 6, caption=
The effect of residue Ca matrix on U, Th measurement, figureFileSmall=rFebQD7EzIML9b9epC9+GA==, figureFileBig=GwJf6j5aNrZvb8ClVvhIMg==, tableContent=null), ArticleFig(id=1225365909636821056, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=图6, caption=
Ca基体对U、Th测定的影响, figureFileSmall=rFebQD7EzIML9b9epC9+GA==, figureFileBig=GwJf6j5aNrZvb8ClVvhIMg==, tableContent=null), ArticleFig(id=1225365909871702098, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 1, caption=
Absorption coefficient of U and Th on UTEVA resin with different concentrations of HNO3 and HCl
, figureFileSmall=null, figureFileBig=null, tableContent=
HNO3浓度/ (mol·L−1) | 吸附系数 | | HCl浓度/ (mol·L−1) | 吸附系数 |
| KdTh | KdU | KdTh | KdU |
| 注:表中U、Th吸附系数参考文献[21]的吸附系数变化趋势图;−代表0.5 mol/L HCl介质下Th吸附系数没有具体数值。 |
| 1.0 | 28 | 60 | | 0.5 | − | 0.9 |
| 2.0 | 50 | 120 | | 1.0 | 5×10−2 | 1 |
| 3.0 | 70 | 200 | | 2.0 | 8×10−2 | 6 |
| 4.0 | 120 | 230 | | 2.5 | 10×10−2 | 15 |
| 5.0 | 170 | 290 | | 3.0 | 11×10−2 | 20 |
| 6.0 | 180 | 295 | | 4.0 | 16×10−2 | 60 |
| 7.0 | 200 | 300 | | 5.0 | 30×10−2 | 100 |
), ArticleFig(id=1225365909980754009, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表1, caption=
不同浓度HNO3、HCl介质中U和Th在UTEVA树脂上的吸附系数
, figureFileSmall=null, figureFileBig=null, tableContent=
HNO3浓度/ (mol·L−1) | 吸附系数 | | HCl浓度/ (mol·L−1) | 吸附系数 |
| KdTh | KdU | KdTh | KdU |
| 注:表中U、Th吸附系数参考文献[21]的吸附系数变化趋势图;−代表0.5 mol/L HCl介质下Th吸附系数没有具体数值。 |
| 1.0 | 28 | 60 | | 0.5 | − | 0.9 |
| 2.0 | 50 | 120 | | 1.0 | 5×10−2 | 1 |
| 3.0 | 70 | 200 | | 2.0 | 8×10−2 | 6 |
| 4.0 | 120 | 230 | | 2.5 | 10×10−2 | 15 |
| 5.0 | 170 | 290 | | 3.0 | 11×10−2 | 20 |
| 6.0 | 180 | 295 | | 4.0 | 16×10−2 | 60 |
| 7.0 | 200 | 300 | | 5.0 | 30×10−2 | 100 |
), ArticleFig(id=1225365910156914789, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 2, caption=
Experimental equipment
, figureFileSmall=null, figureFileBig=null, tableContent=
| 器材名称 | 规格/型号 | 生产厂家 |
| 电感耦合等离子体质谱仪 | Element 2 | 德国Thermo Electron公司 |
| PFA微型柱 | 15 mL | 南京滨正红公司 |
| PFA溶样杯 | 6 mL | 南京滨正红公司 |
| 痕量元素分离纯化Teflon工作台 | / | 自主设计[26] |
| Teflon电热板 | 定制 | 南京滨正红公司 |
| FEP瓶 | 60 mL、500 mL | 美国Thermo公司 |
| LDPE瓶 | 15 mL、30 mL、 60 mL、125 mL | 美国Thermo公司 |
| PFA对瓶酸平衡装置 | / | 美国Savillex公司 |
| 石英亚沸蒸馏器 | / | 金坛晶玻实验仪器厂 |
| 高型烧杯 | 1 L | 环球公司 |
| 移液器 | 100 μL、1 mL | 美国Thermo公司 |
| 电子天平 | 精确至0.000 01g | 德国Sartorius公司 |
), ArticleFig(id=1225365911486509163, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表2, caption=
实验器材
, figureFileSmall=null, figureFileBig=null, tableContent=
| 器材名称 | 规格/型号 | 生产厂家 |
| 电感耦合等离子体质谱仪 | Element 2 | 德国Thermo Electron公司 |
| PFA微型柱 | 15 mL | 南京滨正红公司 |
| PFA溶样杯 | 6 mL | 南京滨正红公司 |
| 痕量元素分离纯化Teflon工作台 | / | 自主设计[26] |
| Teflon电热板 | 定制 | 南京滨正红公司 |
| FEP瓶 | 60 mL、500 mL | 美国Thermo公司 |
| LDPE瓶 | 15 mL、30 mL、 60 mL、125 mL | 美国Thermo公司 |
| PFA对瓶酸平衡装置 | / | 美国Savillex公司 |
| 石英亚沸蒸馏器 | / | 金坛晶玻实验仪器厂 |
| 高型烧杯 | 1 L | 环球公司 |
| 移液器 | 100 μL、1 mL | 美国Thermo公司 |
| 电子天平 | 精确至0.000 01g | 德国Sartorius公司 |
), ArticleFig(id=1225365911650087031, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 3, caption=
Experimental reagent
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试剂名称 | 级别/浓度 | 生产厂家 |
| 注:MΩ·cm为Milli-Q水电阻率单位。 |
| HNO3 | 高纯 | 自主提纯 |
| HCl | 高纯 | 自主提纯 |
| HF | >99.999% | 美国Sigma公司 |
| HClO4 | >99.999% | 美国Sigma公司 |
| H2O2 | 优级纯 | 国药化学试剂公司 |
| CaCO3 | ≥99.999% | 美国Sigma公司 |
| Ca标准溶液 | 1 000 μg/mL (5% HNO3) | 美国J. T. Baker公司 |
| Mg标准溶液 | 1 000 μg/mL (5% HNO3) | 美国J. T. Baker公司 |
| Sr标准溶液 | 1 000 μg/mL (2% HNO3) | 美国J. T. Baker公司 |
| Sc标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Tl标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Th标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| U标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Milli-Q水 | 18.2 MΩ·cm | 美国Millipore公司 |
| UTEVA树脂 | 分析级 (50~100 μm、 100~150 μm) | 法国TRISKEM International公司 |
), ArticleFig(id=1225365911792693376, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表3, caption=
实验试剂
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试剂名称 | 级别/浓度 | 生产厂家 |
| 注:MΩ·cm为Milli-Q水电阻率单位。 |
| HNO3 | 高纯 | 自主提纯 |
| HCl | 高纯 | 自主提纯 |
| HF | >99.999% | 美国Sigma公司 |
| HClO4 | >99.999% | 美国Sigma公司 |
| H2O2 | 优级纯 | 国药化学试剂公司 |
| CaCO3 | ≥99.999% | 美国Sigma公司 |
| Ca标准溶液 | 1 000 μg/mL (5% HNO3) | 美国J. T. Baker公司 |
| Mg标准溶液 | 1 000 μg/mL (5% HNO3) | 美国J. T. Baker公司 |
| Sr标准溶液 | 1 000 μg/mL (2% HNO3) | 美国J. T. Baker公司 |
| Sc标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Tl标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Th标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| U标准溶液 | 1 000 μg/mL (2% HNO3) | 美国Spex公司 |
| Milli-Q水 | 18.2 MΩ·cm | 美国Millipore公司 |
| UTEVA树脂 | 分析级 (50~100 μm、 100~150 μm) | 法国TRISKEM International公司 |
), ArticleFig(id=1225365911910133895, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 4, caption=
Optimized operational parameters of Element 2
, figureFileSmall=null, figureFileBig=null, tableContent=
| 仪器运行参数 | 数据获取参数 |
| 注:M/△M为质谱仪中分辨率的单位。 |
| 射频功率/W | 1 200 | 质量窗口/% | 15 |
| 分辨率/(M·△M−1) | 300 | 扫描步长 | 100 |
| 辅助气流量/(L·min−1) | 1.000 | 积分时间/s | 232Th: 0.100, 238U: 0.100, 205 Tl: 0.050 |
| 样品气流量/(L·min−1) | 约1.12 | 积分窗口/% | 15 |
| 样品提取流速/(μL·min−1) | 约50 | 检测模式 | Counting |
| 扫描类型 | Escan | 扫描次数 | 3×4 |
), ArticleFig(id=1225365912006602892, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表4, caption=
Element 2最佳工作参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 仪器运行参数 | 数据获取参数 |
| 注:M/△M为质谱仪中分辨率的单位。 |
| 射频功率/W | 1 200 | 质量窗口/% | 15 |
| 分辨率/(M·△M−1) | 300 | 扫描步长 | 100 |
| 辅助气流量/(L·min−1) | 1.000 | 积分时间/s | 232Th: 0.100, 238U: 0.100, 205 Tl: 0.050 |
| 样品气流量/(L·min−1) | 约1.12 | 积分窗口/% | 15 |
| 样品提取流速/(μL·min−1) | 约50 | 检测模式 | Counting |
| 扫描类型 | Escan | 扫描次数 | 3×4 |
), ArticleFig(id=1225365912174375063, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 5, caption=
Different particle size of UTEVA resin on U, Th separation efficiency
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒径/μm | 全流程耗时/h | 回收率/% (mean±1σ, n=3) | 参考文献 |
| Th | U |
| 100~150 | / | 90 | 90 | 文献[22] |
| 100~150 | / | 90 | 90 | 文献[31] |
| 50~100 | / | 75~100 | 75~100 | 文献[24] |
| 50~100 | 约3 | 91.3±1.4 | 96.1±3.0 | 本方法 |
| 100~150 | 约1.5 | 89.7±1.6 | 94.9±2.3 | 本方法 |
), ArticleFig(id=1225365912266649761, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表5, caption=
不同粒径的UTEVA对U、Th的分离效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒径/μm | 全流程耗时/h | 回收率/% (mean±1σ, n=3) | 参考文献 |
| Th | U |
| 100~150 | / | 90 | 90 | 文献[22] |
| 100~150 | / | 90 | 90 | 文献[31] |
| 50~100 | / | 75~100 | 75~100 | 文献[24] |
| 50~100 | 约3 | 91.3±1.4 | 96.1±3.0 | 本方法 |
| 100~150 | 约1.5 | 89.7±1.6 | 94.9±2.3 | 本方法 |
), ArticleFig(id=1225365912371507365, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 6, caption=
Procedure blank of U, Th
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| 前处理方法 | Th含量/pg | U含量/pg | 文献 |
| Fe(OH)3+AG 1–X8+UTEVA | 150.0 | 25.0 | 文献[20] |
| UTEVA | 约2.0 | 约10.0 | 文献[36] |
| UTEVA | 2.05±0.63 (mean±1σ, n=12) | 1.32±0.65 (mean±1σ, n=12) | 本研究 |
), ArticleFig(id=1225365912501530801, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表6, caption=
U、Th全流程空白值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 前处理方法 | Th含量/pg | U含量/pg | 文献 |
| Fe(OH)3+AG 1–X8+UTEVA | 150.0 | 25.0 | 文献[20] |
| UTEVA | 约2.0 | 约10.0 | 文献[36] |
| UTEVA | 2.05±0.63 (mean±1σ, n=12) | 1.32±0.65 (mean±1σ, n=12) | 本研究 |
), ArticleFig(id=1225365912644137144, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 7, caption=
U, Th recovery and relative standard error
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| 元素 | 日期 | 测定值/ng | 平均值/ ng (mean±1σ, n=11) | 相对标 准误差/% (n=11) | 平均回 收率/% (n=11) |
| Th | 2021年4月12日
| 0.544±0.012 (n=3, 1σ) | 0.554±0.016 | 3.0 | 92.3 |
| 2021年4月22日 | 0.566±0.019 (n=4, 1σ) |
| 2021年4月26日 | 0.549±0.011 (n=4, 1σ) |
| U | 2021年4月12日 | 94.7±2.00 (n=3, 1σ) | 95.5±1.6 | 1.7 | 95.5 |
| 2021年4月22日 | 96.5±1.42 (n=4, 1σ) |
| 2021年4月26日 | 95.3±1.33 (n=4, 1σ) |
), ArticleFig(id=1225365912845463744, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表7, caption=
U、Th回收率与相对标准误差
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| 元素 | 日期 | 测定值/ng | 平均值/ ng (mean±1σ, n=11) | 相对标 准误差/% (n=11) | 平均回 收率/% (n=11) |
| Th | 2021年4月12日
| 0.544±0.012 (n=3, 1σ) | 0.554±0.016 | 3.0 | 92.3 |
| 2021年4月22日 | 0.566±0.019 (n=4, 1σ) |
| 2021年4月26日 | 0.549±0.011 (n=4, 1σ) |
| U | 2021年4月12日 | 94.7±2.00 (n=3, 1σ) | 95.5±1.6 | 1.7 | 95.5 |
| 2021年4月22日 | 96.5±1.42 (n=4, 1σ) |
| 2021年4月26日 | 95.3±1.33 (n=4, 1σ) |
), ArticleFig(id=1225365912992264391, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=EN, label=Table 8, caption=
U, Th contents in Hainan coral samples
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样品编号
| 元素
| 取样量/ mg | 称取样品测定值/ng (mean±1σ, n=6) | 精度 /% | 珊瑚中含量/(μg·g−1) (mean±1σ, n=6) | 标准加入量/ ng | 加标后测定值/ng (mean±1σ, n=6) | 加标回收率/% (mean±1σ, n=6) |
| Coral-1 | Th | 50 | 0.506±0.012 | 2.0 | (10.12±0.24)×10−3 | 0.500 | 0.992±0.023 | 98.6±2.2 |
| U | 50 | 172.9±1.1 | 0.6 | 3.46±0.02 | 150.0 | 325.8±4.8 | 100.9±1.5 |
| Coral-2 | Th | 50 | 0.241±0.005 | 2.1 | (4.82±0.10)×10−3 | 0.500 | 0.739±0.021 | 99.7±1.0 |
| U | 50 | 133.4±2.2 | 1.7 | 2.67±0.05 | 150.0 | 277.4±1.9 | 97.9±1.0 |
| Coral-3 | Th | 50 | 0.281±0.006 | 1.8 | (5.62±0.12)×10−3 | 0.500 | 0.760±0.017 | 97.3±2.3 |
| U | 50 | 107.2±3.6 | 3.3 | 2.15±0.07 | 150.0 | 255.2±1.2 | 99.2±0.5 |
), ArticleFig(id=1225365913109704910, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795108248277570, language=CN, label=表8, caption=
海南滨珊瑚样品中U、Th含量
, figureFileSmall=null, figureFileBig=null, tableContent=
样品编号
| 元素
| 取样量/ mg | 称取样品测定值/ng (mean±1σ, n=6) | 精度 /% | 珊瑚中含量/(μg·g−1) (mean±1σ, n=6) | 标准加入量/ ng | 加标后测定值/ng (mean±1σ, n=6) | 加标回收率/% (mean±1σ, n=6) |
| Coral-1 | Th | 50 | 0.506±0.012 | 2.0 | (10.12±0.24)×10−3 | 0.500 | 0.992±0.023 | 98.6±2.2 |
| U | 50 | 172.9±1.1 | 0.6 | 3.46±0.02 | 150.0 | 325.8±4.8 | 100.9±1.5 |
| Coral-2 | Th | 50 | 0.241±0.005 | 2.1 | (4.82±0.10)×10−3 | 0.500 | 0.739±0.021 | 99.7±1.0 |
| U | 50 | 133.4±2.2 | 1.7 | 2.67±0.05 | 150.0 | 277.4±1.9 | 97.9±1.0 |
| Coral-3 | Th | 50 | 0.281±0.006 | 1.8 | (5.62±0.12)×10−3 | 0.500 | 0.760±0.017 | 97.3±2.3 |
| U | 50 | 107.2±3.6 | 3.3 | 2.15±0.07 | 150.0 | 255.2±1.2 | 99.2±0.5 |
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