环境科学与管理
環境科學與管理
배경과학여관리
ENVIRONMENTAL SCIENCE AND MANAGEMENT
2015年
6期
113-116
,共4页
地表水%镍%石墨炉-原子吸收分光光度法%优化
地錶水%鎳%石墨爐-原子吸收分光光度法%優化
지표수%얼%석묵로-원자흡수분광광도법%우화
surface water%nickel%graphite furnace atomic absorption spectrophotometry%optimization
本研究对地表水中镍的石墨炉原子吸收分光光度法进行了优化。通过对该方法的试样酸度、不同基体改进剂添加效果、狭缝宽度及主要升温程序等因素的探讨和摸索，确定了最佳的实验条件。在以0.2％硝酸为定容介质、狭缝宽度为0.2 nm、灰化温度1200℃保持5 s、原子化温度2300℃保持5 s的条件下测定方法检出限、精密度及加标回收率。结果表明，方法检出限为0.95μg／L，精密度为1.87％～3.01％，加标回收率介于87.4％～102.9％，优化后的方法检出限低，精密度与准确度良好，适于清洁地表水中镍的测定。
本研究對地錶水中鎳的石墨爐原子吸收分光光度法進行瞭優化。通過對該方法的試樣痠度、不同基體改進劑添加效果、狹縫寬度及主要升溫程序等因素的探討和摸索，確定瞭最佳的實驗條件。在以0.2％硝痠為定容介質、狹縫寬度為0.2 nm、灰化溫度1200℃保持5 s、原子化溫度2300℃保持5 s的條件下測定方法檢齣限、精密度及加標迴收率。結果錶明，方法檢齣限為0.95μg／L，精密度為1.87％～3.01％，加標迴收率介于87.4％～102.9％，優化後的方法檢齣限低，精密度與準確度良好，適于清潔地錶水中鎳的測定。
본연구대지표수중얼적석묵로원자흡수분광광도법진행료우화。통과대해방법적시양산도、불동기체개진제첨가효과、협봉관도급주요승온정서등인소적탐토화모색，학정료최가적실험조건。재이0.2％초산위정용개질、협봉관도위0.2 nm、회화온도1200℃보지5 s、원자화온도2300℃보지5 s적조건하측정방법검출한、정밀도급가표회수솔。결과표명，방법검출한위0.95μg／L，정밀도위1.87％～3.01％，가표회수솔개우87.4％～102.9％，우화후적방법검출한저，정밀도여준학도량호，괄우청길지표수중얼적측정。
The graphite furnace atomic absorption spectrophotometry of the nickel in surface water was optimized .By discus-sing and exploring the factor of sample acidity, the effects of different matrix modifier, slit width and the main temperature pro-gram, the optimal experimental conditions were determined as follows:0.2% nitric acid for the constant volume medium , the slit width is 0.2 nm, ashing temperature 1 200℃for 5 seconds, atomization temperature 2 300℃for 5 seconds.Results show that the method detection limit is 0.95 mu g/L, precision is 1.87% ~3.01%, standard addition recovery rate is between 87.4% ~102.9%, and the optimized method has low detection limit , good precision and accuracy, which is suitable for the determination of nickel in cleaning surface water.
