对比2022和2021年情况，广州2023年PM2.5主要污染源总体呈下降趋势。 近年来，广州市不断加强大气污染防治工作，PM2.5浓度也随之明显下降 ...

Startup PurpleAir makes a living counting dust. Its consumer-level sensors measure particles of dust in air—airborne particulate matter (PM)—using laser particle counters that can count particle sizes ...

Air pollution caused drastic effects not only to the environment but also to human health. Recently, it has become one of the world's biggest public health issues with many countries reporting toxic ...

Thinking about a personal air pollution sensor? Based on cost and on laboratory and field evaluations by air pollution experts, we recommend the PA-II by PurpleAir (purpleair.com) as the best outdoor ...

NEW DELHI: (Dec 8) An indigenous PM2.5 sensor designed for affordability and scalability is being developed to address the Global South's air quality challenges, Professor S N Tripathi, Dean of the ...

Salt Lake Valley’s west-siders expect bad air. Winter inversions hit them harder than the east, with historic redlining exacerbating the issue. But how much do hazy conditions outside affect the air ...

12月15日，生态环境部发布《环境空气质量标准（征求意见稿）》，征求期一个月。该标准2022年启动修订，拟收严多项污染物限值：PM2.5二级年均从35微克/立方米降至25、日均50，PM10同步收严；SO2、NO2等气态污染物限值也收紧，与学界呼吁一 ...

When sitting in traffic in your car, it’s easy to feel safe and distant from the world outside. Cocooned in a metal shell, protected from what’s on the other side of body panels and glass. But there’s ...