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报道了在气相色谱-原子发射光谱联用仪上进行石油馏分油中C、H、S、N、C1多元素模拟蒸馏的研究结果。考察和讨论了进样方式,各元素的最小检测量和线性响应范围,H元素的非线性响应,分流失真等影响准确模拟蒸馏的因素,结果表明S元素在104的范围内是轻微弯曲的非线性,校正后的H元素定量误差不超过理论值的1%。提出的解决分流失真造成模拟蒸馏数据偏离正常值的方法,可使标准样品的测定值与标准值一致,波长为181.379um和174.200um的S和N元素实际样品模拟蒸馏准确定量的浓度下限分别为0.002%和0.04%。
Reported the results of the C, H, S, N, C1 multi-element simulated distillation in petroleum distillates by gas chromatography-atomic emission spectrometry. The factors affecting the exact simulated distillation, such as the injection mode, the minimum detection amount and the linear response range of each element, the nonlinear response of H element, and the shunt distortion, were investigated and discussed. The results show that the S element is slightly curved in the range of 104 Linear, corrected H element quantitation error does not exceed 1% of theoretical value. The proposed solution to the problem of divergence caused by the simulated distillation data deviating from the normal value can make the measured value of the standard sample accord with the standard value. The S and N elements with the wavelength of 181.379um and 174.200um are used to simulate the exact quantitative lower limit of concentration Respectively 0.002% and 0.04%.