本文選題：大氣細粒子 + 陽離子表面有機活性物質(zhì)　； 參考：《環(huán)境科學(xué)研究》2017年03期

【摘要】：分別從樣品前處理和分析測定兩方面對大氣細粒子中陽離子表面有機活性物質(zhì)的二硫藍分光光度分析法進行優(yōu)化,并采用優(yōu)化方案對北京市大氣細粒子進行了分析.結(jié)果表明:(1)優(yōu)化的最佳樣品前處理條件中超聲提取頻率為40 Hz、初始水浴溫度為30℃、超聲提取時間為30 min;(2)優(yōu)化的最佳分析測定條件中二硫藍使用量為1.29 mg(0.5 m L的2.58 g/L二硫藍溶液)、最佳靜置時間為30 min、醋酸鹽緩沖液(pH為5)最佳使用量為3 m L.二硫藍分光光度法優(yōu)化方案標(biāo)準(zhǔn)曲線的R~2為0.998 6,線性較好.采用該優(yōu)化方案測得的北京市大氣細粒子中陽離子表面有機活性物質(zhì)濃度的平均值為12.87 pmol/m~3,其濃度水平數(shù)量級是陰離子表面有機活性物質(zhì)的1/10,其濃度水平高于英國諾威奇與愛丁堡,但低于馬來西亞吉隆坡.
[Abstract]:In this paper, the disulfide blue spectrophotometric analysis method of cationic surface organic active substances in atmospheric fine particles was optimized from two aspects of sample pretreatment and determination, and the atmospheric fine particles in Beijing were analyzed by optimization scheme. The results showed that the optimum pretreatment conditions were as follows: the ultrasonic extraction frequency was 40 Hz, the initial water bath temperature was 30 鈩，

本文編號：1928807