化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2009年
7期
1083-1085
,共3页
浊点萃取%分光光度法%亚硝酸根%分离富集%水样
濁點萃取%分光光度法%亞硝痠根%分離富集%水樣
탁점췌취%분광광도법%아초산근%분리부집%수양
cloud point extraction%spectrophotometry%nitrite%separation and enrichment%water sample
A new method for the determination of trace nitrite by spectrophotometric after cloud point extraction was proposed.The effects of experimental conditions such as acidity,concentration of chromogenic reagent and surfactant,equilibration temperature and time on cloud point extraction were discussed.Under the optimum conditions,a good linear relationship was obtained in the range of 4.0～200 μg/L of the nitrite (r=0.9998),the detection limits of 0.43 μg/L.The recoveries fell in the range from 97.7% to 102.4% and the relative standard deviations were between 1.8% and 3.2%.This method has been applied for the determination of nitrite in real water samples with satisfactory results.
