CAJ | 학술논문

建立了膜保护异烟酸铜微固相萃取的样品前处理方法,并采用气相色谱氢火焰离子化检测器对土壤中的痕量荧蒽(Flt)、苯并[b]荧蒽(BbF)、苯并[k]荧蒽(BkF)、苯并[a]芘(BaP)进行了测定. 考察了水温、萃取时间和超声洗脱时间等对萃取效果的影响. 结果表明:在最佳试验条件下,Flt的检出限为1.0 ng/g;BbF,BkF和BaP的检出限为2.5 ng/g. Flt的线性范围为2.5~500.0 ng/g;BbF,BkF和BaP的线性范围均为12.5~500.0 ng/g. 相对标准偏差(RSD)为4.4%~13.7%(n=9). 采用该方法分析了2种实际土壤中的4种多环芳烃,回收率为34%～90%.
건립료막보호이연산동미고상췌취적양품전처리방법,병채용기상색보경화염리자화검측기대토양중적흔량형은(Flt)、분병[b]형은(BbF)、분병[k]형은(BkF)、분병[a]비(BaP)진행료측정. 고찰료수온、췌취시간화초성세탈시간등대췌취효과적영향. 결과표명:재최가시험조건하,Flt적검출한위1.0 ng/g;BbF,BkF화BaP적검출한위2.5 ng/g. Flt적선성범위위2.5~500.0 ng/g;BbF,BkF화BaP적선성범위균위12.5~500.0 ng/g. 상대표준편차(RSD)위4.4%~13.7%(n=9). 채용해방법분석료2충실제토양중적4충다배방경,회수솔위34%～90%.
A new extraction procedure involving magnetic stirring and micro-solid phase extraction (μSPE) using copper isonicotinate as sorbent was developed for the analysis of fluoranthene (Flt), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF) and benzo[a]pyrene (BaP) in soil samples using GC-FID. Influences of extraction temperature, extraction time and ultrasonic desorption time on extraction efficiencies were investigated. Under the optimized experimental conditions, the limits of detection of this method were 1.0 ng/g for Flt, and 2.5 ng/g for BbF, BkF, and BaP. The linear ranges were from 2.5 to 500.0 ng/g for Flt, and 12.5 to 500.0 ng/g for BbF, BkF, and BaP. The relative standard deviations (n=9) for all compounds varied from 4.4% to 13.7%. Two field contaminated soils were analyzed using the new method, and the recoveries were between 34% and 90%.