CAJ | 학술논문

建立了加速溶剂萃取技术提取-柱色谱分离-气相色谱分析土壤样品中正构烷烃的方法.优化了压力、温度、静态时间、循环次数等参数.随着温度、静态时间、循环次数和压力的增加,正构烷烃短碳链、长碳链和总正构烷烃的量逐渐增加.加速溶剂萃取提取土壤中正构烷烃的条件是:萃取温度150℃,萃取压力10.3 MPa,循环2次,静态提取时间10 min.加速溶剂萃取-柱色谱分离-气相色谱法测定土壤中正构烷烃的方法精密度(RSD)为8%～23%.加速溶剂萃取法提取总正构烷烃量、短碳链正构烷烃量显著高于索氏抽提法的提取量.
건립료가속용제췌취기술제취-주색보분리-기상색보분석토양양품중정구완경적방법.우화료압력、온도、정태시간、순배차수등삼수.수착온도、정태시간、순배차수화압력적증가,정구완경단탄련、장탄련화총정구완경적량축점증가.가속용제췌취제취토양중정구완경적조건시:췌취온도150℃,췌취압력10.3 MPa,순배2차,정태제취시간10 min.가속용제췌취-주색보분리-기상색보법측정토양중정구완경적방법정밀도(RSD)위8%～23%.가속용제췌취법제취총정구완경량、단탄련정구완경량현저고우색씨추제법적제취량.
The paper described the determination of n-alkanes in soil samples by gas chromatography with accelerated solvent extraction (ASE) for sample pretreatment. The main factors which affect the extraction yield of n-alkanes by ASE, such as the temperature, pressure, static time and cycle times were discussed. The results showed that the optimum parameters for n-alkanes extraction from soil samples were: temperature of 150℃, pressure of 10.3 MPa, static time of 10 min and 2 cycles. The precision of method was 8% to 23%RSD. The results also showed that the extraction efficiency of total n-alkanes and short carbon chain n-alkanes by ASE was superior to the conventional Soxhlet extraction.The paper described the determination of n-alkanes in soil samples by gas chromatography with accelerated solvent extraction (ASE) for sample pretreatment. The main factors which affect the extraction yield of n-alkanes by ASE, such as the temperature, pressure, static time and cycle times were discussed. The results showed that the optimum parameters for n-alkanes extraction from soil samples were: temperature of 150℃, pressure of 10.3 MPa, static time of 10 min and 2 cycles. The precision of method was 8% to 23%RSD. The results also showed that the extraction efficiency of total n-alkanes and short carbon chain n-alkanes by ASE was superior to the conventional Soxhlet extraction.