摘要
本研究选用可吸入颗粒物采样器,过氯乙烯滤膜采集粒径≤10μm的空气颗粒物;硝酸—过氯化氢—氢氟酸和压力消解器消解样品;用离子色谱法测定了其中以铅、铜、锌为代表的过渡金属。结果表明:过氯乙烯滤膜的本底值低,采样效率高(>95％),物理性能好。离子色谱测定以上三种金属的浓度与峰高有良好的线性关系,相关系数均大于0.999;精密度以CV％计,铅、铜、锌分别为1.65％、0.35％、0.62％;当采样体积为6.24m^3时,最低检出浓度分别为0.05μg/m^3、0.01μg/m^3、0.02μg/m^3。在测定代表不同氟污染水平的现场样品的同时,以日本VEP标准物质进行了质量监控,铅、铜、锌的回收率分别为103％、103％、109％。
Inhalable particle(IP) were collected by using a KC-8301 IP collector with upchlorothylene filters. The samples were treated with HNO_-H_2O_2-HF and pressure digesters. Transmition metl in olution, such as Pb,Cu,Zn,were determined by ion chromtography(IC). Tbe results showed that superchlorothylene filters had lower background valu,higher efficiency of collection(>95%),and better physical proprties. For IC method,the relationship between concentration and pek hight of above three metals was all remarkable linearity, the relative coefficients were all more than 0.999. theR. S. D. of Pb, Cu, Zn were 1.65%, 0.35%,and 0.62%, respectively. When air volume collected was 6.24m^3, the minimum limit of determination was 0.05μg/m~, 0.01μg/m~,0.02μg/m~,respectively. This method was applied to determine the samples collected from different fluoro ar. Meanwhile, VEP(NIES Certified Reference Material, Japan) was used as quality control and the recovery of Pb,Cu,Zn was 103%, 103%, 109%, respectively.
出处
《中国卫生检验杂志》
CAS
1993年第1期7-10,共4页
Chinese Journal of Health Laboratory Technology
关键词
离子色谱法
可吸入颗粒物
压力消解器
过渡金属
Ion Chromatography
Inhalable Particulate
Pressure Digesters
Transmition Metals
