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【Chemical Machinery and Equipment Network Policies and Regulations】Recently, to standardize the monitoring of the ecological environment, the Ministry of Ecology and Environment organized the compilation of two national ecological and environmental standards, "Determination of Water Quality Strontium Flame Atomic Absorption Spectrophotometry" and "Surface Water Environmental Quality Monitoring Point Code Rules" two national ecological and environmental standards for solicitation of comments, and opened them to the whole society for comments
.
.
"Water quality: determination of strontium, flame atomic absorption spectrophotometry"
Strontium (Sr) is the least abundant element in alkaline earth metal, is a silvery-white to light yellow soft metal, strontium carbonate and other strontium compounds (strontium salt) as an important inorganic salt raw material, can be widely used in electronics, metallurgy, chemical industry, aviation, automotive and other industrial fields, with the continuous development of the world industry, the use of strontium field has gradually expanded and changed, in the modern battery industry strontium is a new type of energy storage material, strontium is also one of the components of high-temperature superconducting metal oxides, becoming a wide range of
。
。
Strontium is an essential trace element for the human body, but excess strontium will interfere with the absorption and metabolism of calcium in the human body, strontium can replace calcium in bones, and is easier to free than calcium and cause some diseases, so strontium is considered to be one of the
metals that potentially threaten human health.
In China's current environmental quality standards and discharge standards, the limits of strontium have not been set in the environmental quality standards of surface water and groundwater, so the formulation of relevant emission standards is of great significance
for enriching the measurement methods of strontium and strengthening the control of strontium salt industry and strontium-containing wastewater, protecting the ecological environment and improving the level of environmental management.
metals that potentially threaten human health.
In China's current environmental quality standards and discharge standards, the limits of strontium have not been set in the environmental quality standards of surface water and groundwater, so the formulation of relevant emission standards is of great significance
for enriching the measurement methods of strontium and strengthening the control of strontium salt industry and strontium-containing wastewater, protecting the ecological environment and improving the level of environmental management.
This standard specifies flame atomic absorption spectrophotometry for the determination of strontium in water, which is suitable for the determination
of soluble strontium and total strontium in surface water, groundwater, domestic sewage and industrial wastewater.
The detection limit of the method for the determination of soluble strontium in this standard is 0.
04 mg/L, and the lower limit of determination is 0.
16 mg/L; The limit of detection of total strontium was 0.
05 mg/L, and the lower limit of determination was 0.
20 mg/L
.
of soluble strontium and total strontium in surface water, groundwater, domestic sewage and industrial wastewater.
The detection limit of the method for the determination of soluble strontium in this standard is 0.
04 mg/L, and the lower limit of determination is 0.
16 mg/L; The limit of detection of total strontium was 0.
05 mg/L, and the lower limit of determination was 0.
20 mg/L
.
Code Rules for Monitoring Points for Environmental Quality of Surface Water
With the continuous development of environmental protection, the refinement and specialization of environmental management have higher and higher requirements for data management, exchange and sharing
.
Coding is the key for information classification, verification, summary and retrieval, the use of keys to identify each record, to overcome the characteristics of uneven objects to be encoded, excellent coding can significantly improve the speed
of data retrieval and processing.
.
Coding is the key for information classification, verification, summary and retrieval, the use of keys to identify each record, to overcome the characteristics of uneven objects to be encoded, excellent coding can significantly improve the speed
of data retrieval and processing.
The surface water environmental quality monitoring network is an important support
for the environmental management of surface water in China.
In the past ten years, the construction of China's surface water environmental quality monitoring network has achieved leapfrog development
.
As the unique identification of monitoring points, the monitoring point code plays an important role
in the maintenance of monitoring point information, the transmission and management of environmental monitoring data, the comprehensive evaluation of environmental quality, and information disclosure.
for the environmental management of surface water in China.
In the past ten years, the construction of China's surface water environmental quality monitoring network has achieved leapfrog development
.
As the unique identification of monitoring points, the monitoring point code plays an important role
in the maintenance of monitoring point information, the transmission and management of environmental monitoring data, the comprehensive evaluation of environmental quality, and information disclosure.
At present, China has not issued a unified ecological environment department surface water monitoring point coding rules standards, different provinces and different levels of ecological environment management departments to formulate their own coding rules, which is not conducive to the integration of national control, provincial control, municipal control and county control data, affecting the integration and use
of surface water environmental monitoring data at all levels in the industry.
Therefore, the establishment of a set of effective surface water environmental quality monitoring point coding rules can effectively help the refinement and specialization
of China's environmental management.
of surface water environmental monitoring data at all levels in the industry.
Therefore, the establishment of a set of effective surface water environmental quality monitoring point coding rules can effectively help the refinement and specialization
of China's environmental management.
This standard stipulates the coding methods and coding rules for routine monitoring points of surface water environmental quality, which is applicable to the routine monitoring point coding work of surface water (rivers, lakes, reservoirs and channels) of ecological and environmental departments at all levels across the country
.
.
It is reported that the deadline for solicitation of comments for the above two drafts is November 10, 2022
.
.
