杭州市主城区VOCs污染特征及影响因素
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李康为,应方,陈玲红,郑仙珏,韩黎霞,吴学成,高翔,岑可法
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Ambient VOCs characteristics and associated effects in urban Hangzhou
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Kang-wei LI,Fang YING,Ling-hong CHEN,Xian-jue ZHENG,Li-xia HAN,Xue-cheng WU,Xiang GAO,Ke-fa CEN
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表 4 降水和非降水期间VOCs体积分数的比较 |
Tab.4 Comparison of VOCs volume fraction for rainy and non-rainy days |
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月份 | 降水天数/d | 降水量/mm | ${\varphi _{\rm t }}$(VOCs)/10−9 | 相对变化/% | ${\varphi _{\rm s}} $(VOCs)/10−9 | 相对变化/% | 非降水期间 | 降水期间 | 非降水期间 | 降水期间 | 1 | 6 | 24.9 | 45.6 | 80.9 | 77.2 | 37.9 | 64.8 | 71.0 | 2 | 17 | 66.8 | 29.3 | 30.5 | 4.0 | 23.6 | 26.3 | 11.4 | 3 | 13 | 115.9 | 43.1 | 43.0 | −0.1 | 28.0 | 38.2 | 36.3 | 4 | 8 | 98.1 | 37.7 | 33.2 | −11.9 | 28.1 | 33.3 | 18.3 | 5 | 10 | 121.3 | 39.2 | 34.8 | −11.3 | 27.5 | 33.8 | 22.9 | 6 | 18 | 346 | 38.1 | 41.0 | 7.5 | 31.6 | 37.7 | 19.3 | 7 | 3 | 9.3 | 37.6 | 32.3 | −14.1 | 28.9 | 25.7 | −11.2 | 8 | 12 | 212.1 | 37.2 | 31.8 | −14.4 | 26.9 | 24.5 | −8.9 | 9 | 10 | 49.4 | 23.9 | 23.0 | −4.0 | 17.3 | 21.9 | 26.8 | 10 | 8 | 331 | 43.7 | 33.0 | −24.5 | 39.2 | 27.2 | −30.7 | 11 | 8 | 32.6 | 67.6 | 51.3 | −24.1 | 35.9 | 46.3 | 28.8 | 12 | 4 | 82.7 | 62.0 | 28.4 | −54.2 | 44.6 | 19.6 | −56.0 |
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