標(biāo)準(zhǔn)編號(hào):	GB 7469-1987
中文名稱:	水質(zhì)總汞的測(cè)定高錳酸鉀過硫酸鉀消解法雙硫腙分光光度法
英文名稱:	Water quality-Determination of total mercury-potassium permanganats-potassium persalfate decomposed method-Dithizonc spectrophotometric method
中標(biāo)分類:	Z16    水環(huán)境有毒物質(zhì)分析方法
行業(yè)分類:	GB    國(guó)家標(biāo)準(zhǔn)
ICS分類:	13.060 13.060     13.060
發(fā)布機(jī)構(gòu):	國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局
發(fā)布日期:	1987-3-14
實(shí)施日期:	1987-8-1
標(biāo)準(zhǔn)狀態(tài):	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	6000 字
翻譯價(jià)格(元):	420.0
交付時(shí)間:	付款后 1 個(gè)工作日

1 Definition Total mercury: mercury concentration in unfiltered water sample determined through fierce decomposition, including inorganic, organically combined, soluble and suspended all mercury (Hg). 2 Principle Potassium permanganate and potassium persalfate are used to decompose the sample at 95℃, and all mercury contained is transformed to mercury (II). The excessive oxidizer is reduced with hydroxylamine hydrochloride, and under acidic condition, mercury ion will react with dithizone to generate orange chelate, it will be extracted with organic solvent and then the excessive dithizone is washed away with alkali solution.

Contents 1 Definition 2 Principle 3 Reagent 4 Apparatus 5 Sampling and Sample 6 Procedures 7 Result Expression Appendix A (Informative) General Explanation Additional Explanation