【摘要】 在酸性介质中,Ce(Ⅳ)氧化连二亚硫酸钠产生较弱的化学发光,异丙威可以明显增强此发光,增加的发光强度与异丙威的质量浓度在0.1~10 mg/L范围内呈良好的线性关系(r=0.999 7),由此建立了一种测定异丙威的流动注射化学发光新方法,检出限为80μg/L(3σ)。对1.0 mg/L的异丙威连续平行测定11次,其相对标准偏差为3.3%。用于测定环境水样和大米中异丙威含量,回收率为96.1%~99.4%。更多还原

【Abstract】 A novel flow injection chemiluminescence(FI-CL) system for the determination of isoprocarb is presented.It was based on the chemiluminescence reaction of sodium hydrosulfite with Ce(Ⅳ) in a vitriol acid solution.The emission intensity can be obviously enhanced by isoprocarb.The proposed method is very sensitive,simple and quick.The enhanced value of chemiluminescence intensity was proportional to isoprocarb concentration in the range of 0.1~10 mg/L(r=0.999 7).The detection limit was 80 μg/L and the(relative) standard deviation was 3.3% for 1.0 mg/L isoprocarb(n=11).This method was successfully applied to the(determination) of isoprocarb in rice and water.The recovery was 96.1%~99.4%.更多还原