Sweat flows from his wrist to his elbows, and he operates to detect the instrument's hand is as stable as Pan

The Yangtze River Daily Da Wuhan Client July 12 (Reporter Jin Wenbing Correspondent Yu Haitao) At 11:10 on the 12th, the sunlight was direct. "Little River" flows to the elbow along the wrist, but in order to ensure accurate sampling data, the 33 -year -old ecological environment monitor Xu Ruiguang operated the water quality analyzer's hand is still very stable.

Environmental monitoring personnel are sampled at 0.5 meters underwater underwater on the surface of Wujin embankment and Laoguancun. Reporter Liu Bin Photo

On the same day, the three environmental monitoring staff of the Emergency and Law Enforcement Monitoring Room of the Wuhan Ecological Environment Monitoring Center took the "Hydrological 302" ship to take the sampling points of Wuhan Pass, Wangjiaxiang, Wujin embankment, and Laoguancun in the Wuhan section of the Yangtze River for water quality. sampling. The reporter witnessed the section monitoring of the water quality of the Yangtze River with the boat with the boat.

Underwater sampler. Reporter Liu Bin Photo

At the Wuhan off -off sample point, the monitor sinks a item that is very similar to the torpedo into the river. "This is a lead fish, an underwater sampler. It has a 1 -liter of water sample cylinder that can extract the water sample we need according to the depth of our requirements." Engineer Yan Kai Sheng told reporters. At the age of 54, he has been monitoring for more than 30 years. He has been an old friend with the captain and sailor of the "Hydrological 302", and he has cooperated very well.

"Water temperature 30 ° C, pH value of 7.34 mg / liters, dissolved oxygen 7.4 mg / liter, and the water quality is qualified." Extracted water samples for 2 minutes. Yao Hao, a 43 -year -old environmental monitor, used the water quality analyzer to quickly measure the corresponding water quality data.

On July 12, environmental monitoring personnel collected water samples at Wuhan Pass and Wangjiaxiang. Reporter Liu Bin Photo

On the other side, Ji Kaisheng uses a color meter to detect the free chlorine content in the water sample.

Xu Ruiguang told reporters, "These remaining water samples, according to the prescribed process, let it sink naturally for 30 minutes, then use the siphon method to inhale into the special sample storage containers we bring, and then bring back to the laboratory to detect and analyze chemical oxygen demand for chemical oxygen demand. , Hanganate index, ammonia nitrogen and total phosphorus data. "

PH value of the collected water samples and solve oxygen on -site analysis. Reporter Liu Bin Photo

It is reported that they bring back the water samples of the laboratory and will analyze the "blind test" by the Municipal Ecological Environment Monitoring Center. The water quality data obtained will be used for the "section water quality assessment" of the Yangtze River.

Since 2018, the city has introduced the water quality assessment and ecological compensation measures of cross -zone sections in the Wuhan section of the Yangtze River, and has the first cross -zone section water quality assessment and ecological compensation mechanism in the country's first city. Through the comprehensive pollution index of water quality of cross -regional sections and upstream entry sections, and water quality in the same period last year, the water quality "improved rewards" and "decreased deduction" ecological compensation and punishment measures.

Back the sampling back to the laboratory for analysis. Reporter Liu Bin Photo

The mechanism of "sectional assessment" seems simple, but it makes each administrative area and functional area of ​​the water quality of the Yangtze River and Hanjiang River in their respective regions. The second is to promote the prevention and control of pollution and improve the effectiveness of water quality.

After finishing the sampling work, returned to the cabin, the staff was sweaty. Reporter Liu Bin Photo

Extract water samples, detect the bottle, go to the next sampling point, continue to extract water samples, on -site testing ... During the busy process, the reporter noticed a detail: the monitor always sweats when the monitor is detected in the cabin. As long as you walk out of the cabin, the Jiangfeng immediately blows the sweaty clothes ... It's so sweaty, dry, and wet. The reporter calculated silently. 7 times.

After wiking the sweat beads on his head, Xu Ruiguang said with a smile, "For three consecutive years, the water quality of the Wuhan section of the Yangtze River is better than the national assessment goal. Wuhan's water is cleaner, and we have more energy to extract water."

[Edit: Deng La Xiu]

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