Atmospheric microplastics have an impact on the climate, environmental monitoring instruments are dispatched

[ Focus on Chemical Machinery Equipment Network ] An environmental model study published on the 20th in the British "Nature" magazine believes that atmospheric microplastics may have a small cooling effect on the climate by reflecting sunlight, but because plastics continue to be in the global environment Accumulation, the future may show a stronger climate effect
.
These findings are the result of calculations of the direct global climate impact of atmospheric microplastics
.

 Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment
Microplastics are becoming a widespread pollutant in the global atmosphere.
They are small in size and low in density, and can be spread around the earth by wind
.
The harm of microplastics is reflected in the small diameter of their particles.
The smaller the volume, the higher the specific surface area (the surface area per unit mass of a porous solid material) and the stronger the ability to adsorb pollutants
.
This is also the reason why it is more harmful to the environment than ordinary non-degradable plastics
.


What are the main 　　environmental monitoring instruments commonly used ?
 Monitoring instrument
　　Environmental monitoring instrument is a general term for instruments used to monitor various parameters of the indoor and outdoor environment.
The environmental quality (or pollution degree) and its changing trend are determined by measuring the representative values ​​of factors affecting environmental quality
.
Environmental monitoring instruments and an exhaust gas mainly comprising air detector , a source of pollution and environmental water quality monitoring equipment, emergency on-site monitoring instruments, electromagnetic radiation and radioactive monitoring equipment four categories, each type monitors environmental factors on the quality of the corresponding The division of labor is different, and the purpose is the same
.
The following is a detailed introduction to these four types of environmental monitoring instruments
.

 Detector
　　1.
Air and exhaust gas monitoring equipment:
 
　　Pollution source smoke and dust (dust) online monitor: used for online monitoring of pollution source smoke and process dust emissions (concentration or total), including measurement of related parameters: flow, O2, moisture content, temperature, etc.
, to achieve total pollution source emissions monitoring The necessary monitoring equipment
.
Flue gas SO2 and NOx online monitor: used to monitor the content of SO2 and NOx in the flue gas online, and realize total monitoring through flow measurement
.
Ground ambient air automatic monitoring system: The system is used for air quality weekly and daily monitoring of the monitoring items are mainly: SO2, NOx, CO, O3 , PM10 and the like
.
Acid rain automatic sampler: Automatically collect precipitation samples to determine the pH value of precipitation
.

 
　　2.
Pollution source and environmental water quality monitoring instrument
 
　　Pollution source online monitoring instrument: The total amount of pollutant discharge monitoring requires simultaneous continuous monitoring of concentration and flow.
Online flow measurement and proportional sampling are the basic technical means for total amount monitoring.
For key pollution sources, online monitoring instruments are also required
.
Flowmeter: an on-line continuous monitoring instrument for standardized open channel sewage discharge outlet flow
.
Automatic sampler: an online automatic sampling device with two methods of flow rate and time rate at the discharge port of the pollution source
.
Automatic environmental water quality monitoring instrument: an online automatic monitoring instrument used for surface water environmental quality indicators
.
Automatic water quality monitoring items are divided into five conventional water quality parameters and other items.
The five conventional water quality parameters include temperature, pH, dissolved oxygen (DO), conductivity and turbidity, and other items include permanganate index and total organic carbon (TOC) , Total nitrogen (TN), total phosphorus (TP) and ammonia nitrogen (NH3-N)
.

 
　　3.
Portable on-site emergency monitoring equipment
 
　　Portable on-site emergency monitoring equipment, used for sudden environmental pollution accident monitoring, its main characteristics are small, easy to carry and fast monitoring
.
Portable spectrophotometer: a portable spectrophotometer used for on-site monitoring.
The test components generally include, ammonia nitrogen, phenols, anilines, arsenic, mercury, and barium and other highly toxic items
.
Small toxic and hazardous gas monitor: a small portable instrument used for on-site toxic and hazardous gas monitoring.
The main monitoring items include CO, Cl2, H2S, SO2 and combustible gas monitoring
.
Simple and fast detection tube: a simple device for rapid quantitative or semi-quantitative detection of harmful components in water or air.
The main monitoring items are CO, Cl2, H2S, SO2, combustible gas, ammonia nitrogen, phenol, hexavalent chromium, fluorine, such as sulfides and COD
.

 
　　Concluding remarks
 
　　At present, the environmental monitoring instrument market is becoming increasingly diversified, but Shanghai Lanju, an environmental monitoring system terminal company, has always adhered to its existing expertise and efficiency
.
Finally, expect more high-tech equipment investment, vigorously promote the use of automated monitoring equipment and data programming, make environmental monitoring equipment work more efficiently, more accurate data, provide a more scientific basis for the government's decision and plan, and also expect the whole society Can understand and pay attention to the maintenance of the environment, and resolutely eradicate environmental pollution and damage to the environment
.

 
　　Source: Lanju Intelligent Technology, Science and Technology Daily
 
　　Original title: Atmospheric microplastics have an impact on the climate, environmental monitoring instruments dispatched