CAJ | 학술논문

采用 SUMMA罐采集空气样品，在预浓缩系统中经3级冷阱捕集后，用气相色谱-质谱联用技术测定环境空气中7种痕量有机硫化物。对试验条件进行优化，使得甲硫醇、乙硫醇、甲硫醚、二硫化碳、噻吩、乙硫醚和二甲二硫醚等7种有机硫化物在21．47μg/m3～336．43μg/m3范围内线性良好。试验表明，7种有机硫化物的方法检出限为0．004μg/m3～0．036μg/m3；标准气体平行测定6次结果的 RSD为2．7％～6．2％，加标回收率为92．2％～97．5％。用该方法测定实际空气样品，并与傅立叶红外光谱法测定的结果进行比对，结果令人满意。
채용 SUMMA관채집공기양품，재예농축계통중경3급랭정포집후，용기상색보-질보련용기술측정배경공기중7충흔량유궤류화물。대시험조건진행우화，사득갑류순、을류순、갑류미、이류화탄、새분、을류미화이갑이류미등7충유궤류화물재21．47μg/m3～336．43μg/m3범위내선성량호。시험표명，7충유궤류화물적방법검출한위0．004μg/m3～0．036μg/m3；표준기체평행측정6차결과적 RSD위2．7％～6．2％，가표회수솔위92．2％～97．5％。용해방법측정실제공기양품，병여부립협홍외광보법측정적결과진행비대，결과령인만의。
Air sample was collected by SUMMA canisters and trapped through three stage cold traps in the pre-concentration system.Gas chromatography equipped with mass spectrometry (GC/MS)made it possible to do qualitative and quantitative analysis for seven kinds of organic sulfur compounds.Experimental conditions were optimized,the calibration curves showed a good linearity from 21.47 μg/m3 to 336.43 μg/m3 for methyl mercap-tan (CH3SH),ethyl mercaptan (CH3CH2SH),methyl sulfide [(CH3)2S],carbon disulfide (CS2),thiophene (C4H4S),1,1′-thiobis-ethane(C4H10S)and dimethyl disulfide [(CH3)2S2].Furthermore,experimental results indicated that method detection limits ranged between 0.004 μg/m3 and 0.036 μg/m3 and relative standard de-viation (n=6)of the seven kinds of organic sulfur compounds ranged from 2.7% to 6.2%.Spiked recoveries were between 92.2% and 97.5%.In addition,the study method was successfully applied on monitoring actual air samples.Finally,the experimental results were compared with the fourier transform infrared spectroscopy,satisfac-tory results were obtained.