CAJ | 학술논문

以苯系物污染土壤样品的采集为例，比较了4种不同采样方法导致样品检测结果的差异。其中，方法1将样品装填至广口瓶内并压实密封，方法2采用非扰动采样器采集10 g样品后转移至加有10 mL甲醇保护剂的Vial瓶中密封，方法3用非扰动采样器采集10 g样品后直接将其密封于采样器内，方法4用Encore采样器采样后将其密封于采样器内。结果表明，方法2采集样品的检出率最高，其余3种方法的差异不明显，方法2采集样品的检出结果71％以上都大于其余3种方法。而且，对于挥发性较强的苯与甲苯，以方法2采集的样品91％以上都大于其余3种方法，最大及平均检出浓度高出2～3个数量级。5种不同土质样品检测结果表明，对于有机质含量较低的细砂，方法2的最高及平均检出浓度均高于其余3种方法1～3个数量级，差异随土壤有机质含量的升高而降低。可见，对于苯系物及挥发性强于苯系物的其他挥发性有机物污染土壤样品的采集，方法2效果最优，可指定为VOCs污染场地土壤样品的采样方法。
이분계물오염토양양품적채집위례，비교료4충불동채양방법도치양품검측결과적차이。기중，방법1장양품장전지엄구병내병압실밀봉，방법2채용비우동채양기채집10 g양품후전이지가유10 mL갑순보호제적Vial병중밀봉，방법3용비우동채양기채집10 g양품후직접장기밀봉우채양기내，방법4용Encore채양기채양후장기밀봉우채양기내。결과표명，방법2채집양품적검출솔최고，기여3충방법적차이불명현，방법2채집양품적검출결과71％이상도대우기여3충방법。이차，대우휘발성교강적분여갑분，이방법2채집적양품91％이상도대우기여3충방법，최대급평균검출농도고출2～3개수량급。5충불동토질양품검측결과표명，대우유궤질함량교저적세사，방법2적최고급평균검출농도균고우기여3충방법1～3개수량급，차이수토양유궤질함량적승고이강저。가견，대우분계물급휘발성강우분계물적기타휘발성유궤물오염토양양품적채집，방법2효과최우，가지정위VOCs오염장지토양양품적채양방법。
Taken soil contaminated by BTEX as an example, the difference among analysis results brought out by 4 different sampling methods were compared. For method 1, contaminated soil was filled into jar manually and compacted until the jar was full and then sealed. For method 2, about 10 g soil was collected with a common core sampler without any disturbance to the soil sample and then transferred and sealed into a Vial where 10 mL methanol was added in advance. For method 3, the soil sample was sealed in the sampler used in method 2 immediately after it was collected. And for method 4, a specific sampler named Encore was used to collect the sample without any disturbance and the sample was also sealed in the sampler immediately. The analysis results reveal that the detection rate for method 2 is the highest, while there is no obvious difference among the other three. More than 71% percent of samples collected using method 2 is higher than the samples collected using the other three methods in analysis results. Furthermore, for benzene and toluene, which are much more volatile, more than 91% percent of samples collected using method 2 are higher in analysis results than the samples collected by the other threes methods. And, the highest and average concentration analyzed for the two contaminants are higher by 2-3 orders. For the 5 different soil textures investigated in the paper, the highest and average concentration detected in samples collected by method 2 are higher by 1-3 order in sandy soil, and the difference will become less obvious as the organic carbon content in soil increase. Therefore, it can be concluded that method 2 is the most appropriate sampling method for BETX and some other more volatile organic contaminants, and can be recommended as the designated method used to sample soil polluted by VOCs during contaminated site investigation.