空气良
温馨提示:各类人群可多参加户外活动,多呼吸一下清新的空气。
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温馨提示:各类人群可多参加户外活动,多呼吸一下清新的空气。
70
97
52
29
9
1
112
亳州
112
轻度污染
84μg/m³
129μg/m³
0.7mg/m³
35μg/m³
3μg/m³
20μg/m³
82
阜阳
82
良
60μg/m³
90μg/m³
0.7mg/m³
47μg/m³
6μg/m³
11μg/m³
68
六安
68
良
49μg/m³
64μg/m³
0.7mg/m³
38μg/m³
4μg/m³
19μg/m³
58
宣城
58
良
41μg/m³
61μg/m³
0.7mg/m³
46μg/m³
5μg/m³
40μg/m³
57
淮南
57
良
40μg/m³
58μg/m³
0.5mg/m³
37μg/m³
8μg/m³
31μg/m³
PM2.5是指大气中直径小于或等于2.5微米的颗粒物,也称为可入肺颗粒物。被吸入人体后会直接进入支气管,干扰肺部的气体交换,引发哮喘、支气管炎等方面的疾病。PM10是直径小于等于10微米的可吸入颗粒物,能够进入上呼吸道,但部分可通过痰液等排出体外,另外也会被鼻腔内部的绒毛阻挡,对人体健康危害相对较小。
空气质量指数(AQI)的取值方法为:在PM2.5,PM10等六种主要污染物中,根据其浓度分别计算对应AQI值,然后取数值最大的那个作为最终报告的AQI值;PM2.5指空气中直径≤2.5微米的颗粒物,其数值一般来源于实测浓度值并计算得出。两者的取值途径完全不同,所以我们为了更严谨的呈现出空气质量情况,选择将空气质量指数(AQI)和PM2.5分榜列出。
一般PM2.5口罩分为3个等级,90%、95%、99%,防护等级越高。N90可过滤90%的PM2.5,N95可过滤95%的PM2.5。等级越高相对呼吸也越困难。N90可基本满足需求。