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김창규 ( Chang Kyu Kim ),엄석원 ( Seog Won Eom ),길혜경 ( Hae Kyoung Kil ),이만호 ( Man Ho Lee ) 한국환경분석학회 2009 환경분석과 독성보건 Vol.12 No.4
In this study, the internal standard method was compared with the external standard method in the determination of organic phosphorus pesticides. Also, We compared the internal standard methods of volume(w/v) with weight(w/w). Analyte was parathion and internal standard was malathion. Calibration curve was drawn with parathion at the final concentration of 0.5 μg/mL, 1.0 μg/mL, 2.5 μg/mL in the external standard method. The internal standard method of volume was in the same way. However, it was fortified with 10 μg internal standard (malathion), respectively, and was dissolved in hexane. After dissolving, total volume of the sample was 10 mL. In the case of the internal standard method of weight, calibration curve was completed with parathion at the final weight of 5 μg, 10 μg, 25 μg. It was fortified with 10 μg internal standard (malathion) respectively, and dissolved in about 10 mL hexane. But it was not important to set the volume exactly. 10 μg of parathion and malathion were spiked into 500 mL deionized water and analyzed with a GC-NPD (Gas Chromatograph-Nitrogen Phosphorus Detector). Result obtained with the external standard method was 0.0134 μg/ mL (RSD 1.437), the internal standard method with volume basis was 0.0143 μg/mL (RSD 1.376) and the internal standard method with weight basis was 0.0146 μg/mL (RSD 1.316). Accuracies of the external standard method, of the internal standard method with volume basis and with weight basis were 67%, 72% and 73%, respectively. Thus the internal standard method with weight basis can determine pesticides more accurately and precisely than the external standard method and is more convenient than the internal standard method with volume basis.
박진아,이원영,김진아,김익수,김현수,정종흡,윤중섭,정권,엄석원,Park, Jin-A,Lee, Won-Young,Kim, Jin-A,Kim, Ik-Su,Kim, Hyun-Su,Jeong, Jong-Heup,Yun, Jung-Seop,Jung, Kweon,Eom, Seog-Won 한국환경보건학회 2013 한국환경보건학회지 Vol.39 No.6
Objectives: We analyzed the characteristics of hazardous air pollutants (HAPs) in road tunnels in Seoul. Methods: Particle matter ($PM_{10}$), elemental carbon (EC), organic carbon (OC), and 16 species of polycyclic aromatic hydrocarbons (PAHs) in two road tunnels (NS tunnel and HJ tunnel) were sampled and analyzed from 2007 to 2011. Results: Levels of $PM_{10}$ and carbon ingredients which were mainly emitted from diesel-fueled vehicles showed a declining tendency in both road tunnels. PAHs levels in HJ were declining slightly while PAHs levels in the NS tunnel fluctuated considerably and showed an increasing tendency. Conclusions: These results suggested that the abatement project of diesel vehicle emissions by the Seoul metropolitan government from 2007 has had an impact on the reduction of DVE into the air, though there exist many things to consider for analyses.