CAJ | 학술논문

大气颗粒物中以铬酸盐形式存在的六价铬一般采集于大气滤膜上，含量极低，常规检测方法无法准确检出。利用离子色谱检测灵敏度高的特点，建立了测定大气中痕量六价铬的离子色谱方法。最低检出限可达0.48,ng/m3，相对标准偏差在1.1%,～9.1%,，实际样品加标回收率在105%,～118%,。方法准确可靠，可满足测定大气中六价铬的需要。
대기과립물중이락산염형식존재적륙개락일반채집우대기려막상，함량겁저，상규검측방법무법준학검출。이용리자색보검측령민도고적특점，건립료측정대기중흔량륙개락적리자색보방법。최저검출한가체0.48,ng/m3，상대표준편차재1.1%,～9.1%,，실제양품가표회수솔재105%,～118%,。방법준학가고，가만족측정대기중륙개락적수요。
In atmospheric particulates,chromium(Ⅵ)exists in the form of chromates and in atmospheric filter membranes,extremely low content of chromium(Ⅵ)can be collected.Therefore,conventional inspection methods cannot precisely detect it.This paper,taking advantage of highly sensitive ion chromatography,establishes a determination method of trace amount chromium(Ⅵ)in the atmosphere by ion chromatography.The minimum detection limit reaches 0.48,ng/m3,with a relative standard deviation between 1.1%~9.1%, and an actual sample standard addition recovery between 105%~118%,.This method is accurate and reliable and can meet the needs of the determination of chromium(Ⅵ)in the atmosphere.