当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2014年
11期
2464-2465,2468
,共3页
固相萃取%原子发射光谱法%砷
固相萃取%原子髮射光譜法%砷
고상췌취%원자발사광보법%신
Solid phase extraction%Atomic emission spectrometry%Arsenic
采用CTAB在碱性条件下加四乙氧基硅烷，生成白色沉淀后在550℃温度下，灼烧5 h，除去表面活性剂，获得MCM-41介孔材料。将MCM-41介孔材料装柱后，采用固相萃取的前处理方法对样品中砷进行富集,富集倍数达到20倍。建立电感耦合等离子体原子发射光谱法对水样中微量砷的测定方法，方法的检出限为0.01μg/mL，测定范围为0.5~10μg/mL,回收率为91.5%~110%。
採用CTAB在堿性條件下加四乙氧基硅烷，生成白色沉澱後在550℃溫度下，灼燒5 h，除去錶麵活性劑，穫得MCM-41介孔材料。將MCM-41介孔材料裝柱後，採用固相萃取的前處理方法對樣品中砷進行富集,富集倍數達到20倍。建立電感耦閤等離子體原子髮射光譜法對水樣中微量砷的測定方法，方法的檢齣限為0.01μg/mL，測定範圍為0.5~10μg/mL,迴收率為91.5%~110%。
채용CTAB재감성조건하가사을양기규완，생성백색침정후재550℃온도하，작소5 h，제거표면활성제，획득MCM-41개공재료。장MCM-41개공재료장주후，채용고상췌취적전처리방법대양품중신진행부집,부집배수체도20배。건립전감우합등리자체원자발사광보법대수양중미량신적측정방법，방법적검출한위0.01μg/mL，측정범위위0.5~10μg/mL,회수솔위91.5%~110%。
Under alkaline conditions , CTAB reacted with four-ethoxy silane to generate white precipitation, then white precipitation was calcined at 550℃ for 5 h to remove surface active agent, at last MCM - 41 mesoporous materials were obtained. The MCM - 41 mesoporous materials were filled in the column, solid phase extraction pretreatment techniques was used to enrich arsenic in the sample with enrichment ratio up to 20 times. Trace arsenic in water sample was determined by the inductively coupled plasma atomic emission spectrometry. The results show that,the detection limit of the method is 0.01 g/mL, determining range is 0.5 ~ 10 g/mL, and the recovery is 91.5% ~ 110%.
