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邵阳市环境空气质量月报2019年6月

发布: 更新时间:2019-07-11 09:30 浏览人数:[ ]

 邵阳市环境空气质量月报

 

 邵阳市环境保护监测站                 201966期(总第18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10μg/m3,较上年同期下降23.1%,较上月下降16.7%。

二氧化氮:全市月平均浓度为14μg/m3,较上年同期下降6.7%,较上月下降22.2%。

可吸入颗粒物(PM10全市月平均浓度为38μg/m3,较上年同期下降2.6,

 较上月下降32.1%。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

细颗粒物(PM2.5:全市月平均浓度为26μg/m3,与上年同期持平,较上月下降21.2%

一氧化碳:全市日均值第95百分位浓度为0.9mg/m3,较上年同期上升13.0%,较上月下降10.0%

臭氧*:全市日最大8小时平均第90百分位浓度为131μg/m3,较上年同期下降9.0%,较上月下降2.2%


1      20196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

COmg/m3

O3-8h(μg/m3

PM2.5(μg/m3

2019

2018

增幅
%

2019

2018

增幅
%

2019

2018

增幅
%

2019

2018

增幅
%

2019

2018

增幅
%

2019

2018

增幅
%

 

市一中

10

13

-23.1

15

18

-16.7

40

41

-2.4

0.9

0.8

12.5

125

137

-8.8

24

28

-14.3

 

市化工厂

11

10

10.0

14

15

-6.7

39

39

0

1.0

0.8

25.0

131

150

-12.7

25

26

-3.8

 

市罐头厂

11

14

-21.4

12

12

0

37

42

-11.9

0.7

0.8

-12.5

126

146

-13.7

26

27

-3.7

 

市环保局

9

15

-40.0

14

14

0

36

36

0

1.0

0.8

25.0

136

161

-15.5

27

26

3.8

 

  

10

13

-23.1

14

15

-6.7

38

39

-2.6

0.9

0.8

13.0

131

144

-9.0

26

26

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30天。空气质量指数在3198之间,达标天数比例为100%。无轻度、中度、重度污染。影响我市环境空气质量的首要污染物是细颗粒物(PM2.5)和臭氧。

与上月相比,本月优良天数比例为100%,与上月基本持平。

与上年同期相比,优良天数比例上升3.40%,综合指数下降0.48,详见表2


2      20196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

5

变化

幅度

上年同期

上月

6

15

15

0

0

0

0

2.84

3.32

-0.48

30

29

1

100

96.6

100

3.40

0

 

 

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4.675.16 pH 月均值为4.88;本月酸性降雨频率为100%。泉塘冲测点降水pH范围为5.215.62pH 月均值为5.37;本月酸性降雨频率为91.7%。详见表3


                                 

3      20196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

12

12

100

4.675.16

4.88

197.9

2.03

4.86

0.753

0.123

1.33

1.30

5.18

1.28

0.124

1.31

泉塘冲

1

14

11

91.7

5.215.62

5.37

207.6

1.89

5.34

0.889

0.125

1.24

1.31

3.86

1.26

0.132

1.29

 

                            


 

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

050

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

51100

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

101150

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

151200

 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

201300

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、朱 

签  发:申学军       

编写日期:2019710