CAJ | 학술논문

探讨用顶空气相色谱法同时测定工作场所空气中，甲酸、乙酸、丙酸和丙烯酸4种羧酸类化合物的适宜条件。流量为300 mL/ min 采集空气试样4.5 L，经硫酸溶液解吸后，在顶空平衡时间为60 min，平衡温度为50℃条件下用气相色谱 FID 检测器，以 FFAP 毛细管柱分离测定。甲酸、乙酸、丙酸和丙烯酸的加标回收率分别为95.3%、96.8%、105%和94.6%；方法最低检出浓度分别为0.4 mg / m3、7.7 mg / m3、3.4 mg / m3和6.6 mg / m3；相对标准偏差（RSD）为5.84%~8.98%。结果表明，该方法有较高的灵敏度和理想的准确度，并能达到规定的检出限，适用于制革车间空气中羧酸类化合物的测定。
탐토용정공기상색보법동시측정공작장소공기중，갑산、을산、병산화병희산4충최산류화합물적괄의조건。류량위300 mL/ min 채집공기시양4.5 L，경류산용액해흡후，재정공평형시간위60 min，평형온도위50℃조건하용기상색보 FID 검측기，이 FFAP 모세관주분리측정。갑산、을산、병산화병희산적가표회수솔분별위95.3%、96.8%、105%화94.6%；방법최저검출농도분별위0.4 mg / m3、7.7 mg / m3、3.4 mg / m3화6.6 mg / m3；상대표준편차（RSD）위5.84%~8.98%。결과표명，해방법유교고적령민도화이상적준학도，병능체도규정적검출한，괄용우제혁차간공기중최산류화합물적측정。
in this paper,we explored the suitable conditions for the simultaneous determination of 4 kinds of carboxylic acids,such as formic acid,acetic acid,propionic acid and acrylic acid in the air of workplace by headspace gas chromatographic method. The optimized parameters are as follow:at air flow of 300 mL/ min,4. 5 L of air was sampled and desorbed by sulfuric acid solution,and then was tested by gas chromatography with FID detector and FFAP capillary column after having been kept in the headspace for the equilibrium time of 60 min at the equilibrium temperature of 50℃. For formic acid,acetic acid,propionic acid and acrylic acid,spike recovery rate are 95. 3% ,96. 8% , 105% and 94. 6% respectively,the minimum detectable concentrations are 0. 4 mg / m3 ,7. 7 mg /m3 ,3. 4 mg / m3 and 6. 6 mg / m3 ,and the relative standard deviations(RSD% )range from 5. 84%to 8. 98% . Results show that the method has high sensitivity and good accuracy,and can meet the requirement on relevant detection limits and therefore is suitable for determination of carboxylic acid compounds in air of leather workshop.