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车间空气中三硝基甲苯可用过氯乙烯滤膜采样,丙酿溶解(含三硝基甲苯和滤膜),OV-I色谱柱分离,FID检测。方法检测限为2.2×10-3μg/2μl,最低检出浓度为0.044mg/m3(采气100L)。精密度、采样效率、回收率和样品贮存稳定性均符合要求。
Trinitrotoluene can be used in the workshop to sample chlorinated ethylene chloride membrane, dissolved in propylene glycol (including trinitrotoluene and membrane), separated by OV-I column, and detected by FID. The detection limit of this method was 2.2 × 10-3μg / 2μl with the lowest detectable concentration of 0.044mg / m3 (gas recovery of 100L). Precision, sample efficiency, recovery, and sample storage stability all met the requirements.