摘要
建立了应用高效液相色谱(HPLC)和电感耦合等离子质谱(ICP—Ms)联用技术测定农业水环境样品中三价砷(Aslll)、一甲基砷(MMA)、二甲基砷(DMA)、五价砷(AsV)4种砷形态的分析方法。试验表明,4种砷形态的线性范围宽(1-300μg·L-1),相关系数(r)均大于0.9990,方法检出限低(0.7~0.98μg·L-1),精密度好,重复测定7次结果的RSD均小于5%。通过计算加标回收率验证方法的准确性,加标回收率为94%~112%。实际样品的测定结果显示,农田废水中砷的主要存在形态为As(V),其次为As(Ⅲ)。
A high performance liquid chromatography and inductively coupled plasma mass spectrometric method was established for analyz- ing 4 arsenic speciations in water of agricultural environment, including As ( Ⅲ ), MMA, DMA and As ( V ). The results showed that the method had a wide linear range( 1 - 300 μg·L-1) and the linear coefficients were more than 0.999 O. The detection limits were very low (0.7-0.9μg·L-1). All of the relative standard deviations (RSD) were less than 5%. The recoveries were between 94% and 112%. The analysis results showed that As( V ) and As( 11I ) were the main arsenic speciations existed in the waste water of agricultural environment. Keywords: waste water in agricultural environment; organic arsenic; inorganic arsenic; high performance liquid chromatography-inductively coupled plasma mass spectrometric
出处
《农业资源与环境学报》
CAS
2014年第2期197-201,共5页
Journal of Agricultural Resources and Environment
基金
中央级公益性科研院所基本科研业务费专项(BSRF201217)
关键词
农业废水
有机砷
无机砷
HPLC—ICP-MS
waste water in agricultural environment
organic arsenic
inorganic arsenic
high performance liquid chromatography-inductivelycoupled plasma mass spectrometric