Article(id=1156967362793656329, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156967360193192910, 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=1753772114703, onlineDateStr=2025-07-29, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753772114703, onlineIssueDateStr=2025-07-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753772114703, creator=13701087609, updateTime=1753772114703, updator=13701087609, issue=Issue{id=1156967360193192910, tenantId=1146029695717560320, journalId=1146119944283992078, year='2024', volume='2', issue='8', pageStart='1', pageEnd='160', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=0, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753772114084, creator=13701087609, updateTime=1753778008087, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156992081479689064, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156967360193192910, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156992081479689065, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1156967360193192910, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=4, endPage=7, ext={EN=ArticleExt(id=1156967363355693069, articleId=1156967362793656329, tenantId=1146029695717560320, journalId=1146119944283992078, language=EN, title=Determination of dichloroacetic acid and trichloroacetic acid in drinking water by gas chromatography-mass spectrometry, columnId=1156641065621906129, journalTitle=Laboratory Testing, columnName=Innovative Applications, runingTitle=null, highlight=null, articleAbstract=
Objective To establish a rapid, accurate and sensitive gaschromatography-mass spectrometry (GC-MS) method for the detection ofdichloroacetic acid (DCA) and trichloroacetic acid (TCA) in drinkingwater samples, and to evaluate the performance and practical applicationof the method. Methods The samples were pretreated by liquid-liquidextraction derivatization technology and then analyzed by GC-MS. ${50\mu }\mathrm{L}$ and ${100\mu }\mathrm{L}$ of DCA and TCAstandards were prepared into mother solutions with concentrations of ${5\mu }\mathrm{g}/\mathrm{{mL}}$ and ${10\mu }\mathrm{g}/\mathrm{{mL}}$ ,respectively, and then diluted with methanol to form a series ofstandard solutions with concentration gradients for the establishment ofstandard curves. 1,2-Dibromopropane was used as the internal standardsubstance to prepare an internal standard extract of ${166.1\mu }\mathrm{g}/\mathrm{L}$ tocorrect the error in the sample analysis process. The spike recoveryexperiment was carried out on ultrapure water to evaluate the accuracyand precision of the method, and the detection limit of the method wasdetermined by the signal-to-noise ratio (S/N) method. Finally, 103drinking water samples were tested to analyze the contents of DCA andTCA. Results The linear ranges of the standard curves were $1 \sim {20}\mathrm{{\mug}}/\mathrm{{mL}}$ for DCA and $1\sim {40}\mathrm{{\mu g}}/\mathrm{{mL}}$ for TCA, withcorrelation coefficients $\left({r}^{2}\right)$ greater than 0.99,recoveries of 99.4%~114.3%, RSDs less than 3.541%, and detection limitsof ${0.1\mu }\mathrm{g}/\mathrm{L}$ and ${0.2\mu }\mathrm{g}/\mathrm{L}$ for DCA and TCA, respectively. The contents of DCA and TCA in 103drinking water samples were lower than the national standard limits,with average concentrations of ${0.25\mu}\mathrm{g}/\mathrm{L}$ and ${0.48\mu}\mathrm{g}/\mathrm{L}$ , respectively, and the data werestatistically significant $\left({P<{0.05}}\right)$ . Conclusion The GC-MS method has good linearity, accuracy, precision and sensitivity, and can meet the needs of drinking water safety monitoring. The method was applied to 103 drinking water samples, and the results showed that the drinking water quality met the national standards and was not seriously contaminated by DCA and TCA.
, correspAuthors=Jian-Feng ZHENG, authorNote=null, correspAuthorsNote=
*ZHENG Jian-Feng, Engineer, Laboratory Director, Zhejiang Pharmaceutical Co., Ltd., Changhai Biological Branch, Shaoxing 312000, China. E-mail:
zhengjianfeng@zmc.top, 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=Jian-Feng ZHENG, Ya-Ping ZHENG), CN=ArticleExt(id=1156967385098965268, articleId=1156967362793656329, tenantId=1146029695717560320, journalId=1146119944283992078, language=CN, title=气相色谱-质谱联用技术测定饮用水中的二氯乙酸和三氯乙酸, columnId=1151957373175820401, journalTitle=实验室检测, columnName=创新应用, runingTitle=null, highlight=null, articleAbstract=
目的 建立一种快速、准确、灵敏的气相色谱 - 质谱联用 (GC-MS)方法,用于检测饮用水样品中的二氯乙酸(DCA)和三氯乙酸(TCA),并评估该方法的性能和实际应用效果。方法 采用液 - 液萃取衍生化技术对样品进行前处理,然后利用 $\mathrm{{GC}}- \mathrm{{MS}}$ 进行分析。分别以 ${50\mu }\mathrm{L}$ 和 ${100\mu }\mathrm{L}$ 的 $\mathrm{{DCA}}$ 和 $\mathrm{{TCA}}$ 标准品配制成浓度分别为 ${5\mu }\mathrm{g}/\mathrm{{mL}}$ 和 ${10\mu }\mathrm{g}/\mathrm{{mL}}$ 的母液,再用甲醇梯度稀释成一系列浓度梯度的标准溶液,用于建立标准曲线。以1,2- 二溴丙烷为内标物质,配制成 ${166.1}\mathrm{{\mu g}}/\mathrm{L}$ 的内标萃取液,用于校正样品分析过程中的误差。对超纯水进行加标回收实验,评估方法的准确性和精密度,利用信噪比 $\left({\mathrm{S}/\mathrm{N}}\right)$ 法确定方法的检出限。最后,对 103 份生活饮用水样品进行检测,分析DCA和TCA的含量。结果 标准曲线线性范围分别为DCA $1 \sim {20}\mathrm{{\mug}}/\mathrm{{mL}}$ 和 TCA $1\sim {40}\mathrm{{\mu g}}/\mathrm{{mL}}$ ,相关系数 $\left({r}^{2}\right)$ 均大于 0.99,回收率为 ${99.4}\%\sim {114.3}\%$ ,RSD小于 ${3.541}\%$ , DCA 和 TCA的检出限分别为 ${0.1\mug}/\mathrm{L}$ 和 ${0.2\mug}/\mathrm{L}$ 。103 份生活饮用水样品中DCA 和 TCA的含量均低于国家标准限值,平均浓度分别为 ${0.25\mu }\mathrm{g}/\mathrm{L}$ 和 ${0.48\mu}\mathrm{g}/\mathrm{L}$ ,数据具有统计学意义 ( $P <{0.05}$ )。结论 该 GC-MS方法具有良好的线性、准确性、精密度和灵敏度,能够满足饮用水安全监测的需求。应用该方法对 103份生活饮用水样品进行检测,结果表明饮用水水质符合国家标准,未受到 DCA 和TCA 的严重污染。
, correspAuthors=郑建峰, authorNote=null, correspAuthorsNote=
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 |
郑建峰,工程师,实验室主任,研究方向:药品、食品添加剂、饲料添加剂前沿检测方法应用。 |
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卫生研究,
2024,
53(02): 316-331., articleTitle=吹扫捕集-气相色谱质谱法测定水中2-甲基异莰醇和土臭素, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1156967395345650056, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, xref=1, ext=[AuthorCompanyExt(id=1156967395354038665, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, companyId=1156967395345650056, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Changhai Biological Branch Zhejiang Pharmaceutical Co., Ltd. Shaoxing 312000 China), AuthorCompanyExt(id=1156967395362427274, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, companyId=1156967395345650056, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 浙江医药股份有限公司昌海生物分公司 绍兴 312000)]), AuthorCompany(id=1156967395429536140, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, xref=2, ext=[AuthorCompanyExt(id=1156967395442119053, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, companyId=1156967395429536140, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Zhejiang Changhai Pharmaceutical Co., Ltd. Shaoxing 312000 China), AuthorCompanyExt(id=1156967395450507662, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, companyId=1156967395429536140, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 浙江昌海制药有限公司 绍兴 312000)])], figs=[ArticleFig(id=1156967398596235710, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=EN, label=Fig. 1, caption=
Gas chromatogram, figureFileSmall=YMGcd7j6NPsOhUSjmCl9QA==, figureFileBig=zVX6lpqGceC9+1cyrqAtZg==, tableContent=null), ArticleFig(id=1156967399514788288, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=CN, label=图 1, caption=
气相色谱图, figureFileSmall=YMGcd7j6NPsOhUSjmCl9QA==, figureFileBig=zVX6lpqGceC9+1cyrqAtZg==, tableContent=null), ArticleFig(id=1156967399611257283, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=EN, label=Table 1, caption=
DCA and TCA recovery statistics at different concentration levels, figureFileSmall=null, figureFileBig=null, tableContent=
| 被测物 | 低浓度 | 中浓度 | 高浓度 | $\operatorname{MDL}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ |
| 回收率范围(%) | RSD(%) | 回收率范围(%) | RSD(%) | 回收率范围(%) | RSD(%) |
| TCA | 99.3~100.9 | 0.637 | 100.5~110.2 | 3.533 | 100.1~100.6 | 0.101 | 0.1 |
| DCA | 102.2~106.5 | 1.005 | 108.3~114.5 | 2.278 | 100.3~101.6 | 0.446 | 0.2 |
), ArticleFig(id=1156967399682560454, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=CN, label=表 1, caption=
DCA 和 TCA 在不同浓度水平下回收率统计表, figureFileSmall=null, figureFileBig=null, tableContent=
| 被测物 | 低浓度 | 中浓度 | 高浓度 | $\operatorname{MDL}\left({\mu \mathrm{g}/\mathrm{L}}\right)$ |
| 回收率范围(%) | RSD(%) | 回收率范围(%) | RSD(%) | 回收率范围(%) | RSD(%) |
| TCA | 99.3~100.9 | 0.637 | 100.5~110.2 | 3.533 | 100.1~100.6 | 0.101 | 0.1 |
| DCA | 102.2~106.5 | 1.005 | 108.3~114.5 | 2.278 | 100.3~101.6 | 0.446 | 0.2 |
), ArticleFig(id=1156967399745475016, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=EN, label=Table 2, caption=
103 Data sheet of DCA and TCA tests for drinking water samples, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | DCA(μg/L) | TCA(μg/L) |
| 检测范围 | 0.1~0.8 | 0.2 ~1.2 |
| 平均值 | 0.25 | 0.48 |
| 标准差 | 0.12 | 0.21 |
| 最大值 | 0.80 | 1.20 |
| 最小值 | 0.10 | 0.20 |
), ArticleFig(id=1156967399812583881, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967362793656329, language=CN, label=表 2, caption=
103 份生活饮用水样品 DCA 和 TCA 检测数据表, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | DCA(μg/L) | TCA(μg/L) |
| 检测范围 | 0.1~0.8 | 0.2 ~1.2 |
| 平均值 | 0.25 | 0.48 |
| 标准差 | 0.12 | 0.21 |
| 最大值 | 0.80 | 1.20 |
| 最小值 | 0.10 | 0.20 |
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