线性转化法识别工作场所空气中未知有机物

Identification of the unknown organic compounds in the air of workplace using linear transformation method

目的:建立通过相对保留时间RRT数据库和RRT测量值及RRT参考值间的线性拟合识别工作场所空气中未知有机物的方法。方法:建立不同色谱柱和不同柱温下的有机物相对保留时间RRT数据库,将未知物的保留时间线性转化后与RRT数据库比较,得出未知物。结果:通过RRT测量值和RRT参考值进行线性拟合,得到DB-WAX柱线性方程:Y=0.9841X+0.0027 R2=0.9995;SPB-1柱线性方程:Y=1.1427X-0.1517 R2=0.9991。结论:线性转化法方便、准确,为工作场所空气中有机物的定性提供了方法。

Objective：To establish a method to identify the unknown organic compounds in the air of workplace using relative retention time （RRT） database and linear fitting between measured RRT values and reference values. Methods： A RRT database was developed using different chromatographic columns at different column temperatures. After linearly transformed, the retention time was compared with the database, and the unknown compounds were identified. Results： Based on the linear fitting between measured RRT values and reference values, the linear equations of the DB - WAX column （ Y = 0. 9841X ＋ 0. 0027, R^2 = 0. 9995 ） and the SPB - 1 column （ Y = 1. 1427X-0. 1517, R^2 =0. 9991 ） were obtained. Conclusion： The linear transformation method was convenient, accurate, and it provided a method for the qualitative analysis of the organic compounds in the air of the workplace.