机构地区: 西北师范大学化学化工学院
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
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