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Based Perchlorate is a new type of pollutant in drinkingwater, which is harmful to human health. The newly promulgated“Standards for Drinking Water Quality”(GB 5749-2022) has been listed asan expanded indicator. The uncertainty of determination of perchloratein drinking water by ion chromatography was evaluated, and the factorsaffecting the accuracy of the result were determined. On the StandardTest Method for Drinking Water Part 5: Inorganic Nonmetallic Indicators(GB/T 5750.5-2023), the perchlorate in drinking water was measured byion chromatography, and the uncertainty introduced in each step wasanalyzed and calculated. And evaluate its expanded uncertainty. Theperchlorate concentration in drinking water was ${0.101}\mathrm{{mg}}/\mathrm{L}$ and theextended uncertainty was ${0.005}\mathrm{{mg}}/\mathrm{L}\left({k =2}\right)$ . The measurement uncertainty is mainly introducedfrom six aspects, namely, the standard material itself, the preparationof standard working fluids, the preparation of series of standardworking fluids, the determination of sample repeatability, the recoveryrate and the main equipment. The most important factor affecting thetotal uncertainty is the uncertainty introduced in the preparationprocess of standard series working fluids.
, correspAuthors=Jing-Kai ZHANG, authorNote=null, correspAuthorsNote=
*ZHANG Jing-Kai, Master, Senior Engineer, Suzhou Jianyuan Detection Technology Co., Ltd., Suzhou 215000, China. E-mail:
zhjk506@aliyun.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=Cheng-Yao CHEN, Jing-Kai ZHANG), CN=ArticleExt(id=1156967559896588575, articleId=1156967535389270071, tenantId=1146029695717560320, journalId=1146119944283992078, language=CN, title=离子色谱法测定饮用水中高氯酸盐不确定度评定, columnId=1152194691782505406, journalTitle=实验室检测, columnName=评价与分析, runingTitle=null, highlight=null, articleAbstract=
高氯酸盐是饮用水中新型的污染物,危害人体健康,新颁布的《生活饮用水卫生标准》(GB5749-2022)已列为扩展指标。通过评定离子色谱法测定饮用水中高氯酸盐的不确定度,确定影响结果准确性的因素。以《生活饮用水标准检验方法第 5 部分:无机非金属指标》(GB/T5750.5-2023)为依据,采用离子色谱法测定饮用水中高氯酸盐,并对引入各步骤的不确定程度进行分析和计算。并评估其扩展不确定度。经测定水中高氯酸盐含量为 ${0.101}\mathrm{{mg}}/\mathrm{L}$ ,扩展不确定度为 ${0.005}\mathrm{{mg}}/\mathrm{L}$ ( $k =2$ )。测量不确定度主要从六个方面引入,分别是标准物质本身、标准使用液配制、系列标准工作液配制、试样重复性测定、加标回收率及主要设备。其中对总不确定度影响最大的为标准系列工作液配制过程引入的不确定度。
, correspAuthors=张泾凯, authorNote=null, correspAuthorsNote=
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=dyq+kULYH9eqgk52olXB4Q==, magXml=VhN+D5TjoYLL1k292D/+rQ==, pdfUrl=null, pdf=oF8fcWghkUM/WrT8mwNK/Q==, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=2FlRqbJsnzbBGZJHeJSuWw==, mapNumber=null, authorCompany=null, fund=null, authors=
 |
陈成瑶,工程师,研究方向为水质检测。 |
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陈成瑶,工程师,研究方向为水质检测。
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陈成瑶,工程师,研究方向为水质检测。
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*, address=Suzhou Jianyuan Detection Technology Co., Ltd. Suzhou 215000 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156967591106405190, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, authorId=1156967590888301375, language=CN, stringName=张泾凯, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
*, address=苏州见远检测技术有限公司 苏州 215000, bio={"content":"
张泾凯,硕士,高级工程师,研究方向为环境分析。
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张泾凯,硕士,高级工程师,研究方向为环境分析。
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Measurement uncertainty component of perchlorate, figureFileSmall=ETOuHHe75GuG3GAXpgUX2Q==, figureFileBig=uji23fM/ZYlQ65KOcg59cA==, tableContent=null), ArticleFig(id=1156967593060950903, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=CN, label=图 1, caption=
高氯酸盐测量不确定度分量, figureFileSmall=ETOuHHe75GuG3GAXpgUX2Q==, figureFileBig=uji23fM/ZYlQ65KOcg59cA==, tableContent=null), ArticleFig(id=1156967593140642680, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=EN, label=Table 1, caption=
Preparation standard curve and its relative standard uncertainty, figureFileSmall=null, figureFileBig=null, tableContent=
| 标准中间液 (mg/L) | 标准溶液浓度 (mg/L) | 移取体积 (mL) | 移液器 (mL) | 容量瓶 (mL) | 相对标准 不确定度 |
| 2.00 | 0.007 | 0.35 | | | 0.00709 |
| 0.010 | 0.50 | 1 | | 0.00709 |
| 0.020 | 1.00 | | | 0.00709 |
| 0.030 | 1.50 | | | 0.00503 |
| 0.050 | 2.50 | | 100 | 0.00503 |
| 0.070 | 3.50 | 5 | | 0.00503 |
| 0.090 | 4.50 | | | 0.00503 |
| 0.110 | 5.50 | | | 0.00539 |
| 0.140 | 7.00 | 10 | | 0.00539 |
), ArticleFig(id=1156967593220334457, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=CN, label=表 1, caption=
配制标准曲线和其相对标准不确定度, figureFileSmall=null, figureFileBig=null, tableContent=
| 标准中间液 (mg/L) | 标准溶液浓度 (mg/L) | 移取体积 (mL) | 移液器 (mL) | 容量瓶 (mL) | 相对标准 不确定度 |
| 2.00 | 0.007 | 0.35 | | | 0.00709 |
| 0.010 | 0.50 | 1 | | 0.00709 |
| 0.020 | 1.00 | | | 0.00709 |
| 0.030 | 1.50 | | | 0.00503 |
| 0.050 | 2.50 | | 100 | 0.00503 |
| 0.070 | 3.50 | 5 | | 0.00503 |
| 0.090 | 4.50 | | | 0.00503 |
| 0.110 | 5.50 | | | 0.00539 |
| 0.140 | 7.00 | 10 | | 0.00539 |
), ArticleFig(id=1156967593287443322, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=EN, label=Table 2, caption=
Concentration of perchlorate in the sample, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 1 | 2 | 3 | 4 | 5 | 6 |
| 样品浓度 (mg/L) | 0.102 | 0.099 | 0.102 | 0.102 | 0.100 | 0.103 |
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样品中高氯酸盐 $\left({\mathrm{{ClO}}}_{4}\right)$ 浓度, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 1 | 2 | 3 | 4 | 5 | 6 |
| 样品浓度 (mg/L) | 0.102 | 0.099 | 0.102 | 0.102 | 0.100 | 0.103 |
), ArticleFig(id=1156967593409078140, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=EN, label=Table 3, caption=
Recovery of perchlorate, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 1 | 2 | 3 | 4 | 5 | 6 |
| 回收率 (%) | 97.0 | 102 | 98.8 | 98.6 | 96.9 | 101 |
), ArticleFig(id=1156967593471992701, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=CN, label=表 3, caption=
高氯酸盐 $\left({\mathrm{{ClO}}}_{4}^{- }\right)$ 加标回收率, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 1 | 2 | 3 | 4 | 5 | 6 |
| 回收率 (%) | 97.0 | 102 | 98.8 | 98.6 | 96.9 | 101 |
), ArticleFig(id=1156967593530712958, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=EN, label=Table 4, caption=
Results of each uncertainty component, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 不确定度分量 | 相对标准不确定度 |
| 1 | 标准物质产生的不确定度 | 0.01155 |
| 2 | 标准物质稀释产生的不确定度 | 0.00959 |
| 3 | 标准曲线产生的不确定度 | 0.01677 |
| 4 | 重复性测量产生的不确定度 | 0.00541 |
| 5 | 加标回收产生的不确定度 | 0.00857 |
| 6 | 主要设备产生的不确定度 | 0.00404 |
), ArticleFig(id=1156967593576850303, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967535389270071, language=CN, label=表 4, caption=
各不确定度分量结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 不确定度分量 | 相对标准不确定度 |
| 1 | 标准物质产生的不确定度 | 0.01155 |
| 2 | 标准物质稀释产生的不确定度 | 0.00959 |
| 3 | 标准曲线产生的不确定度 | 0.01677 |
| 4 | 重复性测量产生的不确定度 | 0.00541 |
| 5 | 加标回收产生的不确定度 | 0.00857 |
| 6 | 主要设备产生的不确定度 | 0.00404 |
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