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邵阳市环境空气质量月报2018年4月份

发布: 更新时间:2018-05-10 15:30 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                  2018年4月04期(总第4期)  

 

1、城市环境空气质量

2018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,其中市水土所作为对照点,不参与评价。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。

 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21μg/m3,较上年同期下降48.8%,较上月同期上升5%。

二氧化氮:全市月平均浓度为23μg/m3,较上年同期下降4.2%,较上月下降20.7%。

可吸入颗粒物(PM10全市月平均浓度为86μg/m3,较上年同期上升26.5%,

 较上月上升30.3%。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

细颗粒物(PM2.5:全市月平均浓度为45μg/m3上年同期持平,较上月下降2.2%。

一氧化碳:全市日均值第95百分位浓度为1.0mg/m3,较上年同期下降16.7%,上月下降16.7%。

臭氧*:全市日最大8小时平均第90百分位浓度为142μg/m3,较上年同期上升1.4%,较上月上升11.8%。


 

1      20184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

2018年4

2017年4

增幅
(%)

2018年4

2017年4

增幅
(%)

2018年4

2017年4

增幅
(%)

2018年4

2017年4

增幅
(%)

2018年4

2017年4

增幅
(%)

2018年4

2017年4

增幅
(%)

市一中

20

32

-41.2

26

28

-7.1

91

67

35.8

1.1

1.3

-15.4

136

136

0

46

47

-2.1

市化工厂

19

35

-45.7

23

24

-4.2

89

69

29.0

1.2

1.3

-7.7

143

141

1.4

45

39

15.4

市罐头厂

27

50

-46.0

21

24

-12.5

90

68

32.4

0.8

1.1

-27.3

139

136

2.2

48

49

-2.0

市环保局

21

45

-53.3

22

21

4.8

81

67

20.9

1.1

1.4

-21.4

143

146

-2.1

43

45

-4.4

   

21

 41

-48.8

23

24

-4.2

86

68

26.5

1.0

1.2

-16.7

142

140

1.4

45

45

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41150之间,达标天数比例为86.7%。轻污染天数为4天,中度重度污染污染天数比例为13.3%。影响我市环境空气质量的主要污染物是可吸入颗粒物(PM10细颗粒物(PM2.5),污染天数中首要污染物是可吸入颗粒物(PM10细颗粒物(PM2.5)。

本月优良天数比例为86.7%,较上月下降6.8%。

与上年同期相比,综合指数下降0.13,优良天数减少3天。详见表2。


表2      2018年4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%

2018年

4

2017年

4

同期

增减

2018年

4

2017年

4

同期增减天数

2018年

4

2017年

4

2018

3

变化

幅度

上年同期

上月

4

8

18

4

 

 

 

4.59

4.72

-0.13

26

29

-3

86.7

96.7

93.5

-10.0

-6.8

 

 

 

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,其中泉塘冲测点为 对照点。本月市监测站测点降水pH范围为5.125.52 pH 月均值为5.35;本月酸性降雨频率为100%。对照点泉塘冲测点降水pH范围为5.625.78pH 月均值为5.64;本月酸性降雨。详见表3。


                                 

表3      20184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

6

6

100

5.125.52

5.35

36.6

2.62

3.10

0.372

0.129

2.11

1.51

2.75

1.79

0.131

2.12

泉塘冲

1

2

0

0

5.625.78

5.64

10.4

2.05

3.57

0.626

0.200

3.57

1.59

2.59

2.06

0.201

2.24

 

备注

  根据湖南省环保厅下发的《湘环函[2016213号》文,邵阳市环保局2018111日下发的《关于将水、环境空气质量报表分开编辑、出刊、上报的通知》,经请示湖南省环境监测中心站同意后,对《邵阳市环境质量月报》进行改版,分为《邵阳市环境空气质量月报》和《邵阳市水环境质量月报》。《邵阳市环境质量月报》从1985年开始编辑发出,截止201712月共发出388期。

 

 

                               


  

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、朱  洲

签  发:申学军       

编写日期:2018年59