www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / China

Indoor air standards advocated

By Zheng Jinran (China Daily) Updated: 2017-06-15 07:35

Experts at forum propose action along lines of outdoor regulation

China needs to draft laws to address worsening indoor air pollution, which deserves more attention, including targeted measures to better protect human health, experts said at a forum on Wednesday.

Soaring sales of air purifiers and talk of protective measures for people indoors have made headlines, along with severe outdoor air pollution, showing the public's growing attention to indoor air, they said.

"The controls on indoor air pollution are far from enough, compared with the national campaign against outdoor air pollution since 2013, and there is lack of scientific and systematic study of this issue," Hou Li'an, an academician at the Chinese Academy of Engineering, said at a forum in Beijing on indoor air quality.

It's urgent to draft laws, considering it will take years to see air quality reach consistently good levels in Chinese cities, even though great reductions of airborne pollutants such as PM2.5 particulate matter have been achieved, he said.

PM2.5 refers to particulate matter with diameter of 2.5 microns or less that is hazardous to human health. Its concentration is a major index for measuring air quality.

Indoor air quality has been greatly influenced by air quality outside. On smoggy days, indoor air is also polluted, Hou's research showed. That opinion is shared both at home and abroad.

According to the World Health Organization, 4.3 million people a year die from exposure to indoor air pollutants worldwide.

In addition to pollutants from outside, the WHO says, indoor air quality sources include cooking and heating, which can produce some health-damaging pollutants, including PM2.5.

Moreover, if someone smokes in an enclosed room on a smoggy day, the air pollution indoors may be more severe than the outside level, and thus more harmful to people, Mao Qun'an, a publicity official from the National Health and Family Planning Commission, said in a news release in January after many days of heavy pollution.

The PM2.5 concentration indoors should be less than 75 micrograms per cubic meter for elderly people and children - the cutoff line for what is defined as "good" air outdoors, the news release quoted Wang Yu, head of the Chinese Center for Disease Control and Prevention, as saying.

But the indoor air quality standards that took effect in 2002 were not updated in recent years, according to Hou.

"We have urged the authorities to update it to keep up with recent air pollution levels," he said.

Unlike outdoor air pollution, which falls under the authority of the Ministry of Environmental Protection, indoor pollution falls under the National Health and Family Planning Commission.

There should be regulations to control the domestic air purifier market, which is promising but chaotic, so that machines meet the same strict standards, and better protect health, Hou added.

Xin Wen contributed to this story.

zhengjinran@chinadaily.com.cn

Highlights
Hot Topics

...
主站蜘蛛池模板: 国产女厕偷窥系列在线视频 | 欧美性69| 亚洲高清在线看 | 综合欧美日韩一区二区三区 | 欧美一级特黄特黄做受 | 成年女人免费又黄又爽视频 | 欧美一级专区免费大片俄罗斯 | 德国女人一级毛片免费 | 久草在线视频免费 | 日本黄色免费大片 | 免费视频久久 | 国产精品成人亚洲 | 真人一级毛片免费完整视 | 亚洲人妖女同在线播放 | 日韩欧美在线综合网高清 | 欧美午夜毛片a级在线 | 特黄日韩免费一区二区三区 | 中文字幕一区二区三区亚洲精品 | 亚洲日产2021三区 | 一区二区欧美视频 | 韩国19禁主播裸免费福利 | 欧美另类自拍 | 一个人看的日本免费视频 | 私人毛片免费高清影视院丶 | 国产一区二区三区免费在线观看 | 亚洲精品国产一区二区在线 | 91视频一区 | 免费在线观看一级毛片 | 国产自愉自愉全免费高清 | 国产免费自拍视频 | 成人黄色毛片 | 国产真实一区二区三区 | 综合久久久久久久 | 欧美成人视 | av人摸人人人澡人人超碰 | 亚洲一级特黄特黄的大片 | 午夜精品久久久久久毛片 | 操欧美美女 | 在线播放一区二区三区 | 亚洲国产精品久久综合 | 亚洲男人的天堂久久香蕉 |