| 扫描电镜-能谱法测定生活饮用水中石棉 |
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| 引用本文： | 刘德晔,刘华良,王联红,史孝霞,霍宗利,吉文亮,刘宏,李红岩,戴建远,梁立喆,马宏瑞.扫描电镜-能谱法测定生活饮用水中石棉[J].分析试验室,2020(3):303-307. |
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| 作者姓名： | 刘德晔 刘华良 王联红 史孝霞 霍宗利 吉文亮 刘宏 李红岩 戴建远 梁立喆 马宏瑞 |
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| 作者单位： | 江苏省疾病预防控制中心;东南大学生物科学与医学工程学院;南京大学环境学院;中国科学院生态环境研究中心;四川大学化学学院;广西大学可再生能源材料协同创新中心;陕西科技大学环境与科学工程学院 |
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| 基金项目： | 江苏省“十三五”青年医学重点人才项目(QNRC2016540);东南大学生物电子学国家重点实验室开放研究基金课题;江苏省医学重点学科项目(ZDXKA2016008)资助。 |
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| 摘 要： | 建立了扫描电镜-能谱法(SEM-EDS)测定生活饮用水中石棉(≥10μm)的方法,使用场发射扫描电镜可对宽度大于0.050~0.124μm的石棉纤维进行定性和计数。若生活饮用水中存在以藻类为主的有机质干扰,使用紫外-过硫酸钾消解可消除相应干扰。配置低、中、高3个浓度的石棉悬浊液模拟水样交由国内不同地区的6家实验室进行方法学验证,结果表明,方法实验室内RSD为10%~37%,实验室间RSD为10%~39%,蓝藻干扰消除实验回收率平均值为98.1%,RSD为11%。方法检出限为5.0×10^4~11.6×10^4个/L,低于GB 5749限量规定的700×10^4个/L。
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| 关 键 词： | 石棉 扫描电镜-能谱法 生活饮用水 蓝藻 |
Determination of asbestos in drinking water by using scanning electron microscopy with energy dispersive X-ray spectrometry |
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| LIU Deye,LIU Hualiang,WANG Lianhong,SHI Xiaoxia,HUO Zongli,JI Wenliang,LIU Hong,LI Hongyan,DAI Jianyuan,LIANG Lizhe,MA Hongrui.Determination of asbestos in drinking water by using scanning electron microscopy with energy dispersive X-ray spectrometry[J].Chinese Journal of Analysis Laboratory,2020(3):303-307. |
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| Authors: | LIU Deye LIU Hualiang WANG Lianhong SHI Xiaoxia HUO Zongli JI Wenliang LIU Hong LI Hongyan DAI Jianyuan LIANG Lizhe MA Hongrui |
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| Affiliation: | (Jiangsu Provincial Center for Disease Control and Prevention,Nanjing 210009;School of Biological Science and Medical Engineering,Dongnan Vniversity Nanjing 210009;School of the Environment,Nanjing University,Nanjing 210046;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085;College of Chemistry,Sichuan University,Chengdu 610064;Collaborative Innovation Center for Sustainable Energy Materials,Nanning 530004;School of Environmental Science and Engineering,Shaanxi University of Science and Technology,Xi'an 710021) |
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| Abstract: | A method for the qualitative and quantitative determination of asbestos in drinking water by scanning electron microscopy-energy dispersive X-ray spectrometry(SEM-EDS)has been established.Asbestos fibers with width larger than 0.050-0.124μm could be qualitatively and quantitatively measured by FESEM.The organic interference in water samples could be eliminated by using UV-potassium persulfate digestion.The method was validated by six laboratories with low,medium and high concentration of simulated asbestos suspensions.The results showed that intra-lab RSDs were 10%-37%,and inter-lab RSDs were 10%-39%,and the average recovery of interference experiment was 98.1% and RSD was 11%.The LODs were 5.0×10^4-11.6×10^4 f/L in six labs,which were much lower than the limit in GB 5749. |
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| Keywords: | asbestos SEM-EDS drinking water blue-green algae |
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