Persistent Organic Pollutants (POPs)

Details

Category: Air pollution / Znečištění ovzduší

Published: 07 January 2021

Last Updated: 07 January 2021

Hits: 1601

Video from GEF about persistent organic pollutants shown the main sources of pesticides and outcome of their impact to the human body

Jak a proč se sleduje kvalita ovzduší v Brně a vůbec

Details

Category: Air pollution / Znečištění ovzduší

Published: 31 December 2020

Last Updated: 31 December 2020

Hits: 1326

How to conect PM2.5 sensor from SM300D2 directly via UART

Details

Category: Devices

Published: 15 November 2020

Last Updated: 17 November 2020

Hits: 1425

A very famous cheap air quality control home device SM300D2 is quite popular. It could be bought with screen or without. But what if you have damage your device? The PM2.5 is a separate creature on it, and you could use it easily separately. A power supply could be easily taken from a USB-UART convertor with 5V power outcome, it needs at maximum 100 mA of output current and more or the less stable voltage (what mostly they have). We need to connect only GND, UART TX and VCC lines of the sensor to our UART to USB connector and use like you want, below will be a link to a home-brewed program to display PM2.5 concentrations on Windows PC.

 

Pic.1 Connection to USB/UART adapter

 

The simple program for show the PM2.5 value is presented  below

 

 

The program to download: https://pollutants.eu/programs/PM_view_1.0.zip (RUSSIAN)

The program to download: https://pollutants.eu/programs/PM_view_1.0_en.zip (ENGLISH)

Project with source code in SharpDevelop: 

https://pollutants.eu/programs/PM_view_1.0_en_C_sharp-master.zip

Working drivers for Profilic PL2303HX : https://pollutants.eu/programs/PL2303_Prolific_GPS_1013_20090319.zip

The local household heating sector continued to contribute significantly to air pollution in 2017

Details

Category: Air pollution / Znečištění ovzduší

Published: 19 October 2020

Last Updated: 19 October 2020

Hits: 1840

Ilustrační obrázek

The local household heating sector continued to contribute significantly to air pollution in 2017, namely emissions of PM10 59,1%, PM2.5 74,3% (Figure 7), carbon monoxide 67,8%, VOC 47,7%, arsenic 34,4%, cadmium 51,1% and benzo[a]pyrene 98,3%. Emissions of sulphur dioxide (51.7 %) and nickel (37.5%) dominated the decisive share of the public energy sector and heat production. The sectors of road freight transport, passenger car transport, non-road vehicles and other machinery e.g. agriculture and forestry account for the most significant share of nitrogen oxide emissions (42.8 %).

Sektor lokálního vytápění domácností se v roce 2017 i nadále významně podílel na znečišťování ovzduší, konkrétně na emisích PM₁₀ 59,1 %, PM_2,5 74,3 % (obr. 7), oxidu uhelnatého 67,8 %, VOC 47,7 %, arsenu 34,4 %, kadmia 51,1 % a benzo[a]pyrenu 98,3 %. Rozhodující podíl sektoru veřejné energetiky a výroby tepla převládal u emisí oxidu siřičitého (51,7 %) a niklu (37,5 %). Sektory silniční nákladní dopravy, osobní automobilové dopravy, nesilničních vozidel a ostatních strojů např. v zemědělství a lesnictví se podílejí nejvýznamněji na emisích oxidů dusíku (42,8 %).

Zdroj/source:

http://portal.chmi.cz/files/portal/docs/tiskove_zpravy/2019/TZ_Rocenka_KO_2018.docx