用户名: 密码: 验证码:
全自动烷基汞分析仪测定水中烷基汞的方法研究
详细信息    查看官网全文
摘要
建立了全自动烷基汞分析仪测定水中的烷基汞(甲基汞,乙基汞)的方法。实验中衍生化反应所用的试剂为含有2.0mol/L醋酸缓冲液,1%(g/v)Na BEt4(四乙基硼化钠)和1%(g/v)Na BPr4(四丙基硼化钠)的2%(g/v)氢氧化钾-水溶液,经衍生化的水样直接吹扫捕集后,进入气相色谱柱中分离并高温裂解,最后进入冷原子荧光检测器(CVAFS)中检测其甲基汞和乙基汞的含量。甲基汞和乙基汞的方法检出限分别为0.01ng/L和0.05ng/L。
A confirmatory method is presented for the determination of Alkyl Mercury(Methyl mercury, Ethyl mercury)in water samples by Automated Alkyl Mercury Analytical System. A 2%(g/v)potassium hydroxide-water mobile phase containing 0.2mol/L Acetic acid buffer,1%(g/v) Na BEt4(Sodium ethyl boride) and 1%(g/v) Na BPr4(Four propyl sodium boride)was used for derivatization reaction of Alkyl Mercury(Methyl mercury, Ethyl mercury) by Automated Alkyl Mercury Analytical System. The concentrations of two species in eluent were detected by CVAFS. The limits of the method were about 0.07 pg and 0.12 pg for Methyl mercury, Ethyl mercury respectively.
引文
[1]李新纪.气相色谱法测定环境水质中的烷基[J].上海环境科学,1992,11(12):21-24.
    [2]王嵩,李宏林,胡明明,彭孝军,樊江莉等.甲基汞检测研究进展[J].化学研究与应用.2011,23(2):129-136.
    [3]GB/T14204-93.水质烷基汞的测定气相色谱法[S].
    [4]王征,游飞明,邱秀玉,黄红霞.HPLC-ICP-MS法测定水样中的甲基汞、乙基汞和无机汞[J].分析测试2009,18(1):28-31.
    [5]EPA 1630-2001.Methyl Mercury in Water by Distillation,Aqueous Ethylation,Purge and Trap,and CVAFS[S].
    [6]水和废水监测分析方法(第四版增补版)[M].中国环境科学出版社,北京.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700