安捷伦7890水质烷基汞的测定 5%DEGS/Chromosorb W AW DMCS玻璃柱2m*1/4
详细信息
| | 品牌：安捷伦7890 | | 型号：2m*1/4 | | 加工定制：是 | |
| | 测量范围：ppm | | 测量对象：烷基汞 | | 控温范围：200 ℃ | |
| | 尺寸：2000 mm | | 重量：0.02 Kg | | 水质：烷基汞 | |
| | TDX-02：非甲烷总烃 | | 石墨化碳黑：零级空气发生器 | | 空气发生器：氢气发生器 | |
| | 环氧乙烷：二甲二硫 | | | | | |
本准规定了测定水中烷基汞（甲基汞，乙基汞）的气相色谱法。
本标准适用于地面水及污水中烷基汞的测定。
本方法用琉基棉富集水中的烷基汞，用盐酸氯化钠溶液解析，然后用甲苯萃取，用带电子捕获检测器的气相色谱仪测定，实际达到的*低检出浓度随仪器灵敏度和水样基体效应而变化，当水样取1L时，甲基汞通常检测到10mg/L，乙基汞检测到20mg/L。 样品中含硫有机物（硫醇，硫醚，噻酚等）均可被富集萃取，在分析过程中积存在色谱柱内，使色谱柱分离效率下降，干扰烷基汞的测定。定期往色谱柱内注入二氯化汞苯饱和溶液，可以去除这些干扰，恢复色谱柱分离效率。
名称：填充柱
规格：2m*1/4
型号：5%DEGS/Chromosorb W AW DMCS80-100目
*高使用温度：200°C
编号：20230511003
应用：GBT 14204-93水质 烷基汞的测定 气相色谱法
This standard is applicable to the determination of alkyl mercury in surface water and sewage.
In this method, the alkyl mercury in water is enriched with Ryuki cotton, analyzed with sodium chloride hydrochloride solution, extracted with toluene, and measured with a gas chromatograph with a electron capture detector. The actual minimum detection concentration varies with the sensitivity of the instrument and the matrix effect of the water sample. When the water sample is 1L, methyl mercury is usually detected at 10mg/L, and ethyl mercury is detected at 20mg/L. The sulfur-containing organic compounds (mercaptans, thioethers, thiophenols, etc.) in the sample can be enriched and extracted, and accumulate in the chromatographic column during the analysis process, which reduces the separation efficiency of the chromatographic column and interferes with the determination of alkyl mercury. Regular injection of mercury dichlorobenzene saturated solution into the chromatographic column can remove these interferences and restore the separation efficiency of the chromatographic column.
Name: Filled Column
Specification: 2m * 1/4
Model: 5% DEGS/Chromosorb W AW DMCS80-100 mesh
Maximum operating temperature: 200 ° C
No.: 20230511003
Application: GBT 14204-93 Water quality - Determination of alkyl mercury - Gas chromatography method
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