DP - 2020年12月18日,TA -当前世界环境PG 01-15 VI - 79 IP - 80 4099 - www.a-i-l-s-a.com/article/1257/ 4100 - www.a-i-l-s-a.com/article/1257/ AB -氨是一种化学活性气体,加速颗粒物形成结合硝酸(NO3−)和硫酸酸云滴(SO42 -),从而降低空气质量。自前工业化时代以来,由于农业活动和肥料使用的增加,全球NH3排放量增加了一倍多。本研究在哈里亚纳邦Jhajjar地区的农村地区,以夏季(秋收作物)的事件为基础,在选定的时段进行了环境NH3监测。以1 LPM流速吸收溶液(1.4ml H2SO4, 1升水)收集气态NH3样品,用吲哚酚蓝法制备,在630nm分光光度计分析。本文研究了人工合成肥料、动物粪便、生物固氮、收获后作物秸秆、生物质燃烧等农业活动排放的环境NH3浓度的昼夜变化与气象参数的关系。它的发射记录为1到45;63年到190年;播种、施肥、灌浆和生物质燃烧时分别为98 ~ 187µg m-3和56 ~ 249µg m-3。播期浓度(1 ~ 45µg m-3)可作为基线值。环境NH3浓度在夜间达到最大值,在中午达到最小值。NH3浓度在夜间观测到较高,这可能是由于夜间大气条件稳定,分散减少所致。 Concentration of NH3 is majorly influenced by wind speed and wind direction & its dependence on these meteorological parameters suggested a local source influence indicating that the nearbyagricultural fields might be the major NH3contributors at the observational site.This study suggests that the knowledge of NH3 levels measured at various stages can help in implementing N efficient management system and emissions can be reduced by minimizing the Nitrogen (N) input during different stages. These measurements are also helpful in making fertilizer policy, and guidelines for farmers.