4—羟基萘—1—亚甲基若丹宁固相萃取光度法测定环境样品中的汞  

Mercury Monitor by HNR Solid Phase Extraction-photometric Method

作　　者：王云华 

机构地区：[1]玉溪市环境科学研究所,云南玉溪653100

出　　处：《云南环境科学》2006年第A01期113-115,共3页Yunnan Environmental Science

摘　　要：研究了4-羟基萘-1-亚甲基若丹宁（HNR）与汞的显色反应，在pH3．5的醋酸钠缓冲介质中，吐温-80存在下，HNR与汞反应生成2：1稳定络合物，该络合物可被Waerssep-Pak-C18小柱固相萃取。用氮一氮二甲基甲酰氨（DMF）洗脱后用光度法测定，在洗脱液介质中。λmax=538nm，体系摩尔吸光系数ε=8．86×10^4L／mol．cm。汞含量在0．05～4．0μg／ml内符合比尔定律。本方法可用于环境样品汞含量的测定，结果满意。The color reaction between HNR and mercury is studied. In sodium acetate buffer solution with pH value less than 3.5 and - 80 temperature, the reaction of mercury and HNR will produce 2 ： 1 stable complex compound, the new material could be extracted by Waers Sep -Pak -C.s solid phase, after elutriation by DMF, using photometric method to detect the elutriant, λmax equals 548nm, εis 8.86×10^4L/mol. cm, the content of mercury is 0. 05～4. 0μg/ml, which is compromise to Bill rule. So the method is good to apply to monitor the content of mercury in environmental sample.

关 键 词：HNR 固相萃取光度法 环境样品 汞 

分 类 号：X830[环境科学与工程—环境工程]