利用硫修饰的化学振荡体系非平衡定态检测土壤中的痕量汞离子  

Determination of trace amount of mercury ion in soil by a sulfide-modified B-Z reaction at non-equilibrium stationary state

作　　者：杨武[1] 李铭[1] 任杰[1] 刘艳君[1] 张晓莉[1] 高锦章[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2011年第2期55-58,73,共5页Journal of Northwest Normal University(Natural Science)

基　　金：中国-乌克兰政府间科技合作基金资助项目(043-05);西北师范大学科技创新工程资助项目(NWNU-KJCXGC-01)

摘　　要：研究了汞离子(Hg2+)对硫离子修饰的化学振荡体系(Mn2+-乙酰丙酮-KBrO3-H2SO4)分别在规则振荡与非平衡定态时的影响.结果表明,在非平衡稳定态时,测定汞离子的灵敏度更高,检测限可达2.12×10-11 mol.L-1.该法已成功用于土壤和水样中痕量汞离子的检测,结果令人满意.The effects of Hg2＋ ion on both the regular oscillating state and the non-equilibrium stationary state after bifurcation of a sulfide modified B-Z oscillating chemical system（Mn2＋-diacetone-KBrO3-H2SO4） are examined in this paper.The results show that the non-equilibrium stationary state is more sensitive to Hg2＋ ion than the regular oscillating state.Thus,a method with high sensitivity for determination of Hg2＋ ion in soil is proposed.The detection limit is down to 2.12×10-11 mol·L-1.It is a new analysis method to detect mercury ion in soil.

关 键 词：硫修饰的化学振荡反应 非平衡定态 汞离子 

分 类 号：O614.243[理学—无机化学] O657.1[理学—化学]