环境监控与预警
環境鑑控與預警
배경감공여예경
ENVIRONMENTAL MONITORING AND FOREWARNING
2015年
3期
25-27
,共3页
甲醇%气相色谱法%自动顶空
甲醇%氣相色譜法%自動頂空
갑순%기상색보법%자동정공
Methanol%Gas chromatography%Automatic headspace
采用自动顶空气相色谱法，以顶空瓶80℃，30 min 平衡时间，4 g 氯化钠的条件下，用气相色谱法测定其含量。结果表明，ρ（甲醇）在1．0～12 mg ／L 范围内线性良好，加标回收率为102％～105％，检出限为0．11 mg ／L，RSD 为3．6％。此法可在30 min 之内完成废水中甲醇的测定，缩短样品的前处理时间。
採用自動頂空氣相色譜法，以頂空瓶80℃，30 min 平衡時間，4 g 氯化鈉的條件下，用氣相色譜法測定其含量。結果錶明，ρ（甲醇）在1．0～12 mg ／L 範圍內線性良好，加標迴收率為102％～105％，檢齣限為0．11 mg ／L，RSD 為3．6％。此法可在30 min 之內完成廢水中甲醇的測定，縮短樣品的前處理時間。
채용자동정공기상색보법，이정공병80℃，30 min 평형시간，4 g 록화납적조건하，용기상색보법측정기함량。결과표명，ρ（갑순）재1．0～12 mg ／L 범위내선성량호，가표회수솔위102％～105％，검출한위0．11 mg ／L，RSD 위3．6％。차법가재30 min 지내완성폐수중갑순적측정，축단양품적전처리시간。
The content of methanol was determined by automatic headspace gas chromatography under the condition of 80 ℃,30 min balance time,and 4g sodium chloride in the top empty bottle.The results showed that the linearity of methanol was in the range of 1 .00 ~12.0 mg /L,and the recovery was between 102% and 105%.The detection limit was 0.1 1 mg /L,and the RSD was 3.6%. This method for determination of methanol in the waste water could complete the whole procedure within 30 minutes,which greatly shortened the time of the sample pretreatment.
