Article(id=1156918079306420692, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156918076408160985, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1753760364605, onlineDateStr=2025-07-29, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753760364605, onlineIssueDateStr=2025-07-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753760364605, creator=13701087609, updateTime=1753760364605, updator=13701087609, issue=Issue{id=1156918076408160985, tenantId=1146029695717560320, journalId=1146119944283992078, year='2024', volume='2', issue='10', pageStart='2', pageEnd='170', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753760363913, creator=13701087609, updateTime=1753785172282, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1157022130291434434, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156918076408160985, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1157022130291434435, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156918076408160985, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=82, endPage=86, ext={EN=ArticleExt(id=1156918080065589728, articleId=1156918079306420692, tenantId=1146029695717560320, journalId=1146119944283992078, language=EN, title=Uncertaintyevaluation of the determination of
$\mathrm{{Cd}}$ ,
$\mathrm{{Pb}}$ and
$\mathrm{{Cr}}$ in soil by microwavedigestion-inductively coupled plasma mass spectrometry, columnId=1156641066674676444, journalTitle=Laboratory Testing, columnName=Evaluation and Analysis, runingTitle=null, highlight=null, articleAbstract=
Objective To evaluate the uncertainty of determination oftotal cadmium (Cd), lead (Pb) and chromium (Cr) in soil by microwavedigestion and inductively coupled plasma mass spectrometry (ICP-MS).Methods To ensure the accuracy and reliability of the detection results,the uncertainty of total cadmium (Cd), lead (Pb) and chromium (Cr) insoil was determined by microwave digestion and inductively coupledplasma mass spectrometry (ICP-MS) and according to JJF1059.1-2012Evalution and Expression of Uncertainty in Measurement the syntheticuncertainty was calculated and the extended uncertainty was obtained.Results The main sources of uncertainty were the standard curvepreparation the repeatability measurement of samples and the standardcurve fitting the contribution rates to the uncertainty of $\mathrm{{Cd}},\mathrm{{Pb}}$ and Cr were50.4%~60.3%, 18.7%~26.1% and 12.1%~20.4%. The influence of sampleweighing and resolution volume for the uncertainty was small and thecontribution rate was between 1.5%~2%, which could be ignored.Conclusion The effective measures to control uncertainty were putforward, which ensured the reliability of the experimental data andprovided the reference for the accurate representation of the heavymetal content in soil
, correspAuthors=Jing ZHANG, authorNote=null, correspAuthorsNote=
*ZHANG Jing, Master, Assistant Researcher, Quality Standards and Testing Institute of Agricultural Technology, Yinchuan 750002, China. E-mail:
943370148@qq.com, copyrightStatement=null, 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=Chun HU, Yong-Xing SUN, Kai-Ge XU, Li-Qun CHANG, Jing ZHANG), CN=ArticleExt(id=1156918097497117451, articleId=1156918079306420692, tenantId=1146029695717560320, journalId=1146119944283992078, language=CN, title=微波消解-电感耦合等离子体质谱法测定土壤中总镉、铅、铬含量的不确定度评定, columnId=1152194691782505406, journalTitle=实验室检测, columnName=评价与分析, runingTitle=null, highlight=null, articleAbstract=
目的 评估微波消解 -电感耦合等离子体质谱法(ICP-MS)测定土壤中总镉(Cd)、铅(Pb)、铬(Cr)含量时的不确定度。方法 为确保检测结果准确可靠,采用微波消解 -电感耦合等离子体质谱法 (ICP-MS)测定土壤中总镉(Cd)、铅(Pb)、铬(Cr)含量的不确定度,并依据JJF1059.1-2012《测量不确定度评定与表示》,计算合成不确定度, 得出扩展不确定度。结果 影响检测结果的不确定度来源主要有标准溶液配制过程、样品重复测量和标准曲线拟合,对 $\mathrm{{Cd}}$ 、 $\mathrm{{Pb}}$ 、 $\mathrm{{Cr}}$ 含量不确定度的贡献率分别为 ${50.4}\%\sim {60.3}\%$ 、 ${18.7}\%\sim {26.1}\%$ 、 ${12.1}\%\sim {20.4}\%$ ,样品称量和消解定容对不确定度的影响很小,贡献率在 1.5%~2%之间,可忽略不计。结论 提出了有效控制不确定度的措施,保证实验数据的可靠性, 为准确表述土壤样品中重金属含量提供了参考。
, correspAuthors=张静, authorNote=null, correspAuthorsNote=
*张静,硕士,助理研究员,研究方向:农产品及产地环境质量安全风险评估。E-mail:
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 |
胡春,硕士,农业工程师,研究方向:农产品及产地环境质量安全分析。 |
 |
张静,硕士,助理研究员,研究方向:农产品及产地环境质量安全风险评估。 |
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33 ( 03 ): 115 - 120 ., articleTitle=电感耦合等离子体质谱法测定固体废物中镉的不确定度评定, refAbstract=null)], funds=[Fund(id=1156918115935277248, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, awardId=NKYG-24-13, language=EN, fundingSource=Science and Technology Innovation Guidance Fund Project of NingXia Academy of Agriculture and Forestry Sciences(NKYG-24-13), fundOrder=null, country=null), Fund(id=1156918115989803204, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, awardId=NKYG-24-13, language=CN, fundingSource=宁夏农林科学院科技创新引导基金项目(NKYG-24-13), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1156918110583345197, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, xref=1, ext=[AuthorCompanyExt(id=1156918110591733806, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110583345197, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 The Analysis and Test Center of Ningxia North Minzu University Yinchuan 750020 China), AuthorCompanyExt(id=1156918110595928111, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110583345197, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 北方民族大学 宁夏分析测试中心 银川 750020)]), AuthorCompany(id=1156918110642065457, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, xref=2, ext=[AuthorCompanyExt(id=1156918110650454066, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110642065457, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Ningxia Agricultural Institute of Survey and Design Yinchuan 750002 China), AuthorCompanyExt(id=1156918110654648371, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110642065457, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 宁夏农业勘查设计院 银川 750002)]), AuthorCompany(id=1156918110742728759, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, xref=3, ext=[AuthorCompanyExt(id=1156918110751117367, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110742728759, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Quality Standards and Testing Institute of Agricultural Technology Yinchuan 750002 China), AuthorCompanyExt(id=1156918110759505976, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, companyId=1156918110742728759, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 宁夏农产品质量标准与检测技术研究所 银川 750002)])], figs=[ArticleFig(id=1156918114697957522, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 1, caption=
Standard working solution series concentration of each element, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 标准溶液浓度 $\left({\mu \mathrm{g}/\mathrm{L}}\right)$ |
| 镉(Cd) | 0.00 | 0.10 | 0.20 | 0.40 | 0.60 | 0.80 | 1.00 |
| 铅(Pb) | 0.00 | 10.0 | 20.0 | 40.0 | 60.0 | 80.0 | 100 |
| 铬(Cr) | 0.00 | 20.0 | 40.0 | 80.0 | 120.0 | 160 | 200 |
), ArticleFig(id=1156918114781843604, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 1, caption=
各元素标准工作溶液系列浓度, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 标准溶液浓度 $\left({\mu \mathrm{g}/\mathrm{L}}\right)$ |
| 镉(Cd) | 0.00 | 0.10 | 0.20 | 0.40 | 0.60 | 0.80 | 1.00 |
| 铅(Pb) | 0.00 | 10.0 | 20.0 | 40.0 | 60.0 | 80.0 | 100 |
| 铬(Cr) | 0.00 | 20.0 | 40.0 | 80.0 | 120.0 | 160 | 200 |
), ArticleFig(id=1156918114840563862, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 2, caption=
Microwave digestion program, figureFileSmall=null, figureFileBig=null, tableContent=
| 步骤 | 温度(℃) | 升温时间(min) | 保持时间(min) |
| 1 | 120 | 5 | 5 |
| 2 | 150 | 5 | 5 |
| 3 | 180 | 5 | 20 |
), ArticleFig(id=1156918114890895512, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 2, caption=
微波消解程序, figureFileSmall=null, figureFileBig=null, tableContent=
| 步骤 | 温度(℃) | 升温时间(min) | 保持时间(min) |
| 1 | 120 | 5 | 5 |
| 2 | 150 | 5 | 5 |
| 3 | 180 | 5 | 20 |
), ArticleFig(id=1156918114941227162, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 3, caption=
The working parameters of the ICP-MS instrument, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 参数 | 设定条件 |
| 1 | RF 功率 | 1500 W |
| 2 | 等离子体气流量 | 15.0 L/min |
| 3 | 雾化器流量 | 0.85 L/min |
| 4 | 辅助气流量 | 1.20 L/min |
| 5 | 反应池工作模式 | KED |
| 6 | 测定同位素 | ${}^{111}\mathrm{{Cd}}\text{、}{}^{208}\mathrm{\;{Pb}}\text{、}{}^{52}\mathrm{{Cr}}$ |
| 7 | 内标元素 | ${}^{103}\mathrm{{Rh}}$,在线加入 |
| 8 | 重复次数 | 3 次 |
), ArticleFig(id=1156918114995753116, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 3, caption=
ICP-MS 工作条件, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 参数 | 设定条件 |
| 1 | RF 功率 | 1500 W |
| 2 | 等离子体气流量 | 15.0 L/min |
| 3 | 雾化器流量 | 0.85 L/min |
| 4 | 辅助气流量 | 1.20 L/min |
| 5 | 反应池工作模式 | KED |
| 6 | 测定同位素 | ${}^{111}\mathrm{{Cd}}\text{、}{}^{208}\mathrm{\;{Pb}}\text{、}{}^{52}\mathrm{{Cr}}$ |
| 7 | 内标元素 | ${}^{103}\mathrm{{Rh}}$,在线加入 |
| 8 | 重复次数 | 3 次 |
), ArticleFig(id=1156918115067056286, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 4, caption=
Standard uncertainty components, figureFileSmall=null, figureFileBig=null, tableContent=
| 分量 | 来源 | 评定方式 |
| ${U}_{\text{rel1 }}$ | 样品称量过程 | B 类 |
| ${U}_{\text{rel2 }}$ | 样品消解定容 | B 类 |
| ${U}_{\text{rel3 }}$ | 标准溶液配制 | B 类 |
| ${U}_{\text{rel4 }}$ | 标准曲线拟合 | A 类 |
| ${U}_{\text{rel5 }}$ | 样品重复测定 | A 类 |
), ArticleFig(id=1156918115121582240, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 4, caption=
标准不确定度分量表, figureFileSmall=null, figureFileBig=null, tableContent=
| 分量 | 来源 | 评定方式 |
| ${U}_{\text{rel1 }}$ | 样品称量过程 | B 类 |
| ${U}_{\text{rel2 }}$ | 样品消解定容 | B 类 |
| ${U}_{\text{rel3 }}$ | 标准溶液配制 | B 类 |
| ${U}_{\text{rel4 }}$ | 标准曲线拟合 | A 类 |
| ${U}_{\text{rel5 }}$ | 样品重复测定 | A 类 |
), ArticleFig(id=1156918115197079716, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 5, caption=
The uncertainty of measuring tool calibration, figureFileSmall=null, figureFileBig=null, tableContent=
| 移取/定容 体积(mL) | 量具(A 级) | 最大允差 (mL) | $K$ | 标准不确定 度(mL) | 相对 不确定度 |
| 0.10 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0204 |
| 0.20 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0102 |
| 0.40 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0051 |
| 0.50 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.00408 |
| 0.60 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00545 |
| 0.80 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00409 |
| 1.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00327 |
| 2.00 | ${2.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.012}$ | $\sqrt{6}$ | 0.0049 | 0.00245 |
| 100.00 | ${100}\mathrm{\;{mL}}$ 容量瓶 | $\pm {0.10}$ | $\sqrt{6}$ | 0.0408 | 0.000408 |
), ArticleFig(id=1156918115276771498, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 5, caption=
量具校准引入的不确定度, figureFileSmall=null, figureFileBig=null, tableContent=
| 移取/定容 体积(mL) | 量具(A 级) | 最大允差 (mL) | $K$ | 标准不确定 度(mL) | 相对 不确定度 |
| 0.10 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0204 |
| 0.20 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0102 |
| 0.40 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.0051 |
| 0.50 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.005}$ | $\sqrt{6}$ | 0.00204 | 0.00408 |
| 0.60 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00545 |
| 0.80 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00409 |
| 1.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.008}$ | $\sqrt{6}$ | 0.00327 | 0.00327 |
| 2.00 | ${2.0}\mathrm{\;{mL}}$ 分度吸量管 | $\pm {0.012}$ | $\sqrt{6}$ | 0.0049 | 0.00245 |
| 100.00 | ${100}\mathrm{\;{mL}}$ 容量瓶 | $\pm {0.10}$ | $\sqrt{6}$ | 0.0408 | 0.000408 |
), ArticleFig(id=1156918115339686062, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 6, caption=
The uncertainty of measuring tool calibration during the preparation of standard, figureFileSmall=null, figureFileBig=null, tableContent=
| 不确定度分量 | 移取体积(mL) | 定容体积(mL) | 使用的量具 | 相对标准不确定度 |
| ${U}_{1}$ | 1.00 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00330 |
| ${U}_{2}$ | 2.00 | 100.00 | ${2.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00248 |
| ${U}_{3}$ | 0.00 | 100.00 | ${100}\mathrm{\;{mL}}$ 容量瓶 | 0.000408 |
| ${U}_{4}$ | 0.10 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.0204 |
| ${U}_{5}$ | 0.20 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.0102 |
| ${U}_{6}$ | 0.40 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00512 |
| ${U}_{7}$ | 0.50 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00410 |
| ${U}_{8}$ | 0.60 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00547 |
| ${U}_{9}$ | 0.80 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00411 |
), ArticleFig(id=1156918115406794931, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 6, caption=
标准系列配制过程中量具校准引入的不确定度, figureFileSmall=null, figureFileBig=null, tableContent=
| 不确定度分量 | 移取体积(mL) | 定容体积(mL) | 使用的量具 | 相对标准不确定度 |
| ${U}_{1}$ | 1.00 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00330 |
| ${U}_{2}$ | 2.00 | 100.00 | ${2.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00248 |
| ${U}_{3}$ | 0.00 | 100.00 | ${100}\mathrm{\;{mL}}$ 容量瓶 | 0.000408 |
| ${U}_{4}$ | 0.10 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.0204 |
| ${U}_{5}$ | 0.20 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.0102 |
| ${U}_{6}$ | 0.40 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00512 |
| ${U}_{7}$ | 0.50 | 100.00 | ${0.5}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00410 |
| ${U}_{8}$ | 0.60 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00547 |
| ${U}_{9}$ | 0.80 | 100.00 | ${1.0}\mathrm{\;{mL}}$ 分度吸量管,${100}\mathrm{\;{mL}}$ 容量瓶 | 0.00411 |
), ArticleFig(id=1156918115465515189, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 7, caption=
Uncertainty introduced by standard curve fitting, figureFileSmall=null, figureFileBig=null, tableContent=
| $y ={bx}+ a$ | $r$ | $b$ | $S$ | ${Sxx}$ | ${c}_{0}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ | $\bar{c}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ | ${u}_{\text{曲线 }}$ | ${U}_{\mathrm{{rel}}4}$ |
| Cd | $y ={0.003x}+ {0.000}$ | 0.9998 | 0.003 | 0.000155 | 0.6083 | 0.261 | 0.517 | 0.00265 | 0.0102 |
| Pb | $y ={0.021x}+ {0.000}$ | 0.99997 | 0.021 | 0.010499 | 6083 | 40.9 | 51.7 | 0.209 | 0.00511 |
| Cr | $y ={0.010x}+ {0.000}$ | 0.99999 | 0.010 | 0.0216 | 24333 | 135.6 | 103.3 | 0.961 | 0.00709 |
), ArticleFig(id=1156918115528429750, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 7, caption=
标准曲线拟合引入的不确定度, figureFileSmall=null, figureFileBig=null, tableContent=
| $y ={bx}+ a$ | $r$ | $b$ | $S$ | ${Sxx}$ | ${c}_{0}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ | $\bar{c}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ | ${u}_{\text{曲线 }}$ | ${U}_{\mathrm{{rel}}4}$ |
| Cd | $y ={0.003x}+ {0.000}$ | 0.9998 | 0.003 | 0.000155 | 0.6083 | 0.261 | 0.517 | 0.00265 | 0.0102 |
| Pb | $y ={0.021x}+ {0.000}$ | 0.99997 | 0.021 | 0.010499 | 6083 | 40.9 | 51.7 | 0.209 | 0.00511 |
| Cr | $y ={0.010x}+ {0.000}$ | 0.99999 | 0.010 | 0.0216 | 24333 | 135.6 | 103.3 | 0.961 | 0.00709 |
), ArticleFig(id=1156918115574567095, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 8, caption=
Repeatability determination results of sample, figureFileSmall=null, figureFileBig=null, tableContent=
| 测定次数 | Cd(mg/kg) | Pb(mg/kg) | Cr(mg/kg) |
| 1 | 0.138 | 19.5 | 65.4 |
| 2 | 0.135 | 19.7 | 65.1 |
| 3 | 0.136 | 19.5 | 66.9 |
| 4 | 0.134 | 21.3 | 68.1 |
| 5 | 0.125 | 20.6 | 67.7 |
| 6 | 0.130 | 21.4 | 68.4 |
| 7 | 0.124 | 20.4 | 70.2 |
| 8 | 0.132 | 20.5 | 67.4 |
| 9 | 0.125 | 20.9 | 68.2 |
| 10 | 0.125 | 20.7 | 69.8 |
| 均值 $\bar{X}\left({\mathrm{{mg}}/\mathrm{{kg}}}\right)$ | 0.130 | 20.4 | 67.7 |
| 标准偏差 $S$ | 0.00533 | 0.692 | 1.64 |
| 标准不确定度 ${U}_{5}$ | 0.00169 | 0.219 | 0.52 |
| 相对标准不确定度 ${U}_{\text{rel5 }}$ | 0.0130 | 0.0107 | 0.00768 |
), ArticleFig(id=1156918115654258872, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 8, caption=
样品重复性测定结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 测定次数 | Cd(mg/kg) | Pb(mg/kg) | Cr(mg/kg) |
| 1 | 0.138 | 19.5 | 65.4 |
| 2 | 0.135 | 19.7 | 65.1 |
| 3 | 0.136 | 19.5 | 66.9 |
| 4 | 0.134 | 21.3 | 68.1 |
| 5 | 0.125 | 20.6 | 67.7 |
| 6 | 0.130 | 21.4 | 68.4 |
| 7 | 0.124 | 20.4 | 70.2 |
| 8 | 0.132 | 20.5 | 67.4 |
| 9 | 0.125 | 20.9 | 68.2 |
| 10 | 0.125 | 20.7 | 69.8 |
| 均值 $\bar{X}\left({\mathrm{{mg}}/\mathrm{{kg}}}\right)$ | 0.130 | 20.4 | 67.7 |
| 标准偏差 $S$ | 0.00533 | 0.692 | 1.64 |
| 标准不确定度 ${U}_{5}$ | 0.00169 | 0.219 | 0.52 |
| 相对标准不确定度 ${U}_{\text{rel5 }}$ | 0.0130 | 0.0107 | 0.00768 |
), ArticleFig(id=1156918115712979129, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=EN, label=Table 9, caption=
Table of uncertainty degree component list, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 元素 | ${U}_{\text{rel 1 }}$ | ${U}_{\text{rel2 }}$ | ${U}_{\text{rel3 }}$ | ${U}_{\text{rel 4 }}$ | ${U}_{\text{rel 5 }}$ |
| 相对不确定度 | Cd | 0.000816 | 0.000731 | 0.0251 | 0.0102 | 0.0130 |
| Pb | 0.000816 | 0.000731 | 0.0249 | 0.00511 | 0.0107 |
| Cr | 0.000816 | 0.000731 | 0.0248 | 0.00709 | 0.00768 |
| 贡献率(%) | Cd | 1.6 | 1.5 | 50.4 | 20.4 | 26.1 |
| Pb | 1.9 | 1.8 | 58.9 | 12.1 | 25.3 |
| Cr | 2.0 | 1.8 | 60.3 | 17.2 | 18.7 |
| 合成不确定度 ${U}_{\text{rel 合成}}$(mg/kg) | Cd | | | 0.0078 | | |
| Pb | | | 0.563 | | |
| Cr | | | 1.82 | | |
| 类别 | 元素 | ${U}_{\text{rel 1 }}$ | ${U}_{\text{rel2 }}$ | ${U}_{\text{rel3 }}$ | ${U}_{\text{rel4 }}$ | ${U}_{\text{rel5 }}$ |
| 扩展不确定度 $\mathrm{U}$(mg/kg) | Cd | 0.00782 | | 最终结果表示 (mg/kg) | | ${0.130}\pm {0.0078}$ |
| Pb | 1.13 | | | ${20.4}\pm {1.13}$ |
| Cr | 3.64 | | | ${67.7}\pm {3.64}$ |
), ArticleFig(id=1156918115775893692, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156918079306420692, language=CN, label=表 9, caption=
不确定度分量统计一览表, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 元素 | ${U}_{\text{rel 1 }}$ | ${U}_{\text{rel2 }}$ | ${U}_{\text{rel3 }}$ | ${U}_{\text{rel 4 }}$ | ${U}_{\text{rel 5 }}$ |
| 相对不确定度 | Cd | 0.000816 | 0.000731 | 0.0251 | 0.0102 | 0.0130 |
| Pb | 0.000816 | 0.000731 | 0.0249 | 0.00511 | 0.0107 |
| Cr | 0.000816 | 0.000731 | 0.0248 | 0.00709 | 0.00768 |
| 贡献率(%) | Cd | 1.6 | 1.5 | 50.4 | 20.4 | 26.1 |
| Pb | 1.9 | 1.8 | 58.9 | 12.1 | 25.3 |
| Cr | 2.0 | 1.8 | 60.3 | 17.2 | 18.7 |
| 合成不确定度 ${U}_{\text{rel 合成}}$(mg/kg) | Cd | | | 0.0078 | | |
| Pb | | | 0.563 | | |
| Cr | | | 1.82 | | |
| 类别 | 元素 | ${U}_{\text{rel 1 }}$ | ${U}_{\text{rel2 }}$ | ${U}_{\text{rel3 }}$ | ${U}_{\text{rel4 }}$ | ${U}_{\text{rel5 }}$ |
| 扩展不确定度 $\mathrm{U}$(mg/kg) | Cd | 0.00782 | | 最终结果表示 (mg/kg) | | ${0.130}\pm {0.0078}$ |
| Pb | 1.13 | | | ${20.4}\pm {1.13}$ |
| Cr | 3.64 | | | ${67.7}\pm {3.64}$ |
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