Sharma S K, Mandal T K, Shenoy D M, Bardhan Pratirupa, Srivastava Manoj K, Chatterjee A, Saxena Mohit, Singh B P, Ghosh S K
CSIR-National Physical Laboratory, Dr. K S Krishnan Road, New Delhi, 110 012, India.
CSIR-National Institute of Oceanography, Dona Paula, Panaji, Goa, 403 004, India.
Bull Environ Contam Toxicol. 2015 Nov;95(5):661-9. doi: 10.1007/s00128-015-1660-z. Epub 2015 Oct 5.
This paper presents the variation of elemental concentrations of total carbon (TC), total nitrogen (TN) and isotopic ratios of δ13C and δ15N along with δ13OC and OC of PM10 mass over Delhi, Varanasi and Kolkata of the Indo Gangetic Plain (IGP), India. For Delhi, the average concentrations of TC and TN of PM10 were 53.0±33.6 and 14.9±10.8 µg m(-3), whereas δ13C and δ15N of PM10 were -25.5±0.5 and 9.6±2.8‰, respectively. For Varanasi, the average values of δ13C and δ15N of PM10 were -25.4±0.8 and 6.8±2.4‰, respectively. For Kolkata, TC and TN values for PM10 ranged from 9.1-98.2 to 1.4-25.9 µg m(-3), respectively with average values of 32.6±24.9 and 9.3±8.2 µg m(-3), respectively. The average concentrations of δ13C and δ15N were -26.0±0.4 and 7.4±2.7‰, respectively over Kolkata with ranges of -26.6 to -24.9‰ and 2.8±11.5‰, respectively. The isotopic analysis revealed that biomass burning, vehicular emission and secondary inorganic aerosols were likely sources of PM10 mass over IGP, India.
本文介绍了印度恒河平原（IGP）的德里、瓦拉纳西和加尔各答地区，PM10质量中总碳（TC）、总氮（TN）的元素浓度变化，以及δ13C、δ15N、δ13OC和OC的同位素比率变化。在德里，PM10中TC和TN的平均浓度分别为53.0±33.6和14.9±10.8 µg m(-3)，而PM10的δ13C和δ15N分别为-25.5±0.5和9.6±2.8‰。在瓦拉纳西，PM10的δ13C和δ15N的平均值分别为-25.4±0.8和6.8±2.4‰。在加尔各答，PM10的TC和TN值分别在9.1 - 98.2至1.4 - 25.9 µg m(-3)之间，平均值分别为32.6±24.9和9.3±8.2 µg m(-3)。加尔各答地区δ13C和δ15N的平均浓度分别为-26.0±0.4和7.4±2.7‰，范围分别为-26.6至-24.9‰和2.8±11.5‰。同位素分析表明，生物质燃烧、车辆排放和二次无机气溶胶可能是印度恒河平原地区PM10质量的来源。
