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首页> 外文会议>2000 National Poultry Waste Management Symposium, Oct 16-18, 2000, Ocean City, MD >HOW THE MOVE FROM PM_(10) TO PM_(25) IS SIGNIFICANT TO ANIMAL PRODUCTION
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HOW THE MOVE FROM PM_(10) TO PM_(25) IS SIGNIFICANT TO ANIMAL PRODUCTION

机译：从PM_（10）到PM_（25）的移动对动物生产意义重大

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The atmospheric concentration of compounds is regulated through the Clean Air Act (Public Law 80-159, 1955). This Act and its subsequent amendment specifically established National Ambient Air Quality Standards (NAAQS) for six compounds: carbon monoxide, ozone, particulate matter (PM), sulfur dioxide, nitrogen oxides, and hydrocarbons. The PM standard initially was based to control total suspended PM (particles up to 40 μm in diameter. In 1978, the standard was revised to regulate inhalable particles, or particles that can deposit in the respiratory tract and therefore have greater potential for causing adverse health effects (PM_(10) -- particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers). Recent federal review of the NAAQS resulted in a new standard for PM. The new proposed standard is for PM_(2.5). The rationale behind having a PM standard relates to the impact of PM on health. The NAAQS were developed in order to protect the health of the population, particularly those thought to be sensitive.
机译：化合物的大气浓度通过《清洁空气法》（1955年第80-159号公共法）进行管理。该法案及其后续修正案专门针对六种化合物建立了国家环境空气质量标准（NAAQS）：一氧化碳，臭氧，颗粒物（PM），二氧化硫，氮氧化物和碳氢化合物。 PM标准最初是基于控制总悬浮颗粒物（直径最大为40μm的颗粒物。）在1978年，该标准进行了修订以管制可吸入颗粒物或可沉积在呼吸道中的颗粒物，因此具有更大的潜在危害健康的可能性。 （PM_（10）-空气动力学直径小于或等于标称十微米的颗粒物）。联邦最近对NAAQS的审查产生了PM的新标准，新提议的标准是PM_（2.5）。制定PM标准的基本原理与PM对健康的影响有关，因此制定了NAAQS是为了保护人们尤其是敏感人群的健康。

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