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邵阳市环境空气质量月报2019年10月

发布: 更新时间:2019-11-13 08:57

 邵阳市环境空气质量月报

 邵阳市环境保护监测站                 2019年1010期(总第22期)  

1、城市环境空气质量

2019年我市共有市化工厂、市罐头厂、市一中、市环保局和市水土所五个空气质量自动站监测点,均为空气质量日报点。按照《环境空气质量标准》(GB3095-2012)监测六个基本项目:二氧化硫、二氧化氮、可吸入颗粒物(PM10)、细颗粒物(PM2.5)、一氧化碳、臭氧。

1) 各监测项目与上年同期、上月的情况比较

二氧化硫:全市月平均浓度为17μg/m3,较上年同期下降10.5%,较上月下降15.0%。

二氧化氮:全市月平均浓度为25μg/m3,较上年同期下降3.8%,较上月上升9.0%。

可吸入颗粒物(PM10全市月平均浓度为63μg/m3,较上年同期上升3.3,

 较上月下降10.0%。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

细颗粒物(PM2.5:全市月平均浓度为41μg/m3上年同期持平,较上月下降6.80%。

一氧化碳:全市日均值第95百分位浓度为0.9mg/m3,较上年同期下降10.0%,上月持平

臭氧*:全市日最大8小时平均第90百分位浓度为167μg/m3,较上年同期上升5.70%,较上月下降9.7%。


1      201910全市环境空气污染物浓度均值统计

站点名称

SO2(μg/m3

NO2(μg/m3

PM10(μg/m3

CO(mg/m3

O3-8h(μg/m3

PM2.5(μg/m3

2019年

2018年

增幅
(%)

2019年

2018年

增幅
(%)

2019年

2018年

增幅
(%)

2019年

2018年

增幅
(%)

2019年

2018年

增幅
(%)

2019年

2018年

增幅
(%)


市一中

18

21

-14.3

27

30

-10.0

62

65

-4.60

1.0

1.0

0

166

171

-2.90

40

39

2.60


市化工厂

15

18

-16.7

26

30

-13.3

68

65

4.60

1.0

0.9

11.0

162

152

6.60

43

43

0


市罐头厂

16

18

-11.1

22

22

0

62

59

5.10

0.9

1.0

-10.0

172

149

15.4

39

43

-9.30


市环保局

19

18

5.60

25

24

4.20

59

56

5.40

1.0

1.0

0

170

156

9.0

42

39

7.70


   

17

19

-10.5

25

26

-3.80

63

61

3.30

0.9

1.0

-10.0

167

158

5.70

41

41

0


国家标准年均值

60

40

70

4(日均值)

160(日最大8小时平均)

35


备注:根据《环境空气质量评价技术规范(试行)》(HJ633-2013)CO取城市日均值百分之95位数;臭氧取城市日最大8小时平均百分之90位数

2)环境空气质量日报状况

本月我市空气质量自动站共发布环境空气质量日报31天。空气质量指数在22136之间,达标天数比例为83.9%。轻度污染5天,污染天数比例为16.1%,无中度、重度污染。影响我市环境空气质量的超标污染物是臭氧,首要污染物是臭氧。

与上月相比,本月优良天数比例为83.9%,比上月上升23.9%。

与上年同期相比,优良天数增加1天,综合指数下降0.42,详见表2。


2      2019年10月全市空气质量状况统计表

城市

空气质量分布(天数)

综合指数

优良天数

优良天数比例%

2019

 

2018

 

同期

增减

2019

 

2018

 

同期增减天数

2019

 

2018

 

2019

9

变化

幅度

上年同期

上月

10

12

14

5

0

0

0

4.23

4.65

-0.42

26

25

1

83.9

80.6

60.0

3.3

23.9

2、城市降水状况

我市降水设邵阳市监测站和泉塘冲两个测点。本月市监测站测点降水pH范围为5.055.33 pH 月均值为5.22;本月酸性降雨频率为100%。泉塘冲测点降水pH范围为5.435.92pH 月均值为5.73;本月酸性降雨频率28.6%。详见表3。


                                 

3      201910月全市降水监测结果统计表

 

 

 

 

降水样品

 

 

酸雨

样品

 

 

降水pH

(无量纲)

降水量mm

月平均化学浓度mg/L

范围

均值

实测

ms/m

SO42-

NO3-

F-

Cl-

NH4+

Ca2+

Mg2+

Na+

K+

邵阳市

监测站

1

7

7

100

5.05~5.33

5.22

51.2

0.25

4.53

0.840

0.191

1.25

1.33

2.83

1.42

0.218

1.37

泉塘冲

1

7

2

28.6

5.43~5.92

5.73

53.6

0.22

3.07

0.636

0.134

1.22

1.31

3.56

1.41

0.182

1.35

 

                            


  

城市环境空气质量定性评价

空气质量指数AQI

空气质量级别

质量状况

表征

颜色

对健康的影响

建议采取的措施

0~50

一级

绿色

空气质量令人满意,基本无空气污染

各类人群可正常活动

51~100

二级

黄色

空气质量可接受,但某些污染物可能对极少数异常敏感人群健康有较弱影响

较少数异常敏感人群应减少户外活动

101~150

三级

轻微污染

橙色

敏感人群症状有轻度加剧,健康人群出现刺激症状

儿童、老年人及心脏病、呼吸系统疾病患者应减少长时间、高强度户外锻炼

151~200

 四级

中度污染

红色

进一步加剧易感人群症状,可能对健康人群心脏、呼吸系统有影响

儿童、老年人及心脏病、呼吸系统疾病患者避免长时间、高强度户外锻炼,一般人群适量减少户外运动

201~300

五级

重度污染

紫色

心脏病和肺病患者症状显著加剧,运动耐受力降低,健康人群普遍出现症状

儿童、老年人和心脏病、肺病患者应停留在室内,停止户外运动,一般人群减少户外运动

>300

六级

严重污染

褐红色

健康人群运动耐受力降低,有明显强烈症状,提前出现某些疾病

儿童、老年人及病人应当留在室内,避免体力消耗,一般人群应避免户外运动

编  写:唐程伟、向红丽 

审  核:罗葳、  简红霞      

审  定:赵红伟、熊汉云

签  发:王菁梅       

编写日期:2019年1110日

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