METHODS DETERMINATION OF METHANE EMISSIONS IN RICE FIELD BY GAS CHROMATOGRAPHY (GC)
Abstract
ABSTRACT
A simple, rapid, accurate and sensitive method using GC–FID for the determination of metan emission in rice field.The chromatographic separation was achieved on an Porapak Q, (4m x 2 mm ID glass, 80/100 mesh; Supelco ) column using nitrogen as mobile phase at a flow rate of 40kPa. Good separation was obtained for the analyte. The calibration curves were obtained in the concentration range 1–32 ppm (v/v). The results showed a close correlation coefficient (R2 = 0.9998) for analyte in the calibration range studied. Detection limit of the method for methan was 0.08 ppmV. The mean spike recoveries from 95% to 97%. The reproducibility RSDs ranged from 3.5%. The results demonstrated the suitability of the GC - FID approach for the analysis methane emissions in rice fields of VietNam.
References
McMurry, John (1988). Organic Chemistry. Brooks/Cole. pp. 866 ISBN 0534079687.en. wikipedia.org/wiki/Glucose
Miller J.C and Miller J. N,1988. Statistics for Analytical Chemistry. Ellis Horwood Limited.
WANG Ying-hong,WANG Yue-si, SUN Yang, XU Zhong-jun and LIU Guang-ren (2006). An improved gas chromatography for rapid measurement of CO2,CH4 and N2O[J]. Journal of environmental sciences (China),18(1):162-169.
BộTài nguyên và Môi trường (MONRE), 2009. Kịch bản biến đổi khí hậu và nước biển dâng cho Việt Nam, Bộ Tài Nguyên và Môi Trường.http://www.mcdvietnam.org/Uploaded/admins/360%20do/Climate%20change/Tai%20lieu/Kich%20ban%20Bien%20doi%20khi%20hau.pdf.
Trần Cao Sơn, Phạm Xuân Đà, Lê Thị Hồng Hảo, Nguyễn Thành Trung, 2010. Thẩm định phương pháp trong phân tích hóa học và vi sinh. Viện nghiên cứu an toàn vệ sinh thực phẩm quốc gia.
