The comprehensive seminar on the new water law of GB5749 for drinking water was successfully held!

[Pharmaceutical Network Conference Forum] The comprehensive seminar on GB5749 new water law for drinking water was officially concluded on the afternoon of May 2 The special session on disinfection by-products, the special session on inorganic pollutants and the special session on organic pollutants were staged in tu.
What's new about drinking water pollution and testing? Have you got it all? The fresh review of 3part is here, check it out ↓ Part 1: At 14:00 on May 25, the comprehensive seminar on the new water method of drinking water GB5749-disinfection by-products Special guest: Director of the Water Office of the Environmental Institute of the Chinese Center for Disease Control and Prevention E Xueli, Chen Jie, Ion Chromatography Application Engineer at Thermo Fisher Scientific, and Zhang Tianyang, an associate professor at the School of Environmental Science and Engineering, Tongji Universi.
First of all, as a member who participated in the revision of the "Sanitation Standard for Drinking Water (GB5749-2022)" standard, E Xueli brought a multi-faceted explanation of the standa.
"Drinking Water Hygiene Standard (GB5749-2022)" is a national mandatory standa.
The release of this standard is not only to ensure the safety of drinking water, but also to judge whether the drinking water is safe or n.
At present, the standard is in the preparatory period before its official implementation and will be implemented on April 1, 202According to E Xueli, this revision adjusted the number of indicators from 106 to 97, added 4 new indicators including perchlorate and acetochlor, and deleted 13 indicators including heat-resistant colifor.
Including some adjustments to the index classification method,e.
Enough details? Let's have a look at the live broadcast room again~ With the further understanding of "Drinking Water Sanitation Standard (GB5749-2022)", the live broadcast sharing came to Chen Jie's in-depth explanation of "Ion Chromatography in Drinking Water Detection and Applicatio.
Ion chromatography is a branch of liquid chromatograp.
At present, Thermo Fisher's ion analysis equipment includes ICS-600, Aqulon, ICS-4000 and so .
Chen Jie said that in the determination of disinfection by-products, ion chromatography has more obvious advantages than gas chromatography and liquid chromatograp.

Simultaneous determination of DCAA/TCAA/CLO2-/CLO3-/BrO3-, e.
, with better separation effect and simpler pretreatment ste.
During the live broadcast, Chen Jie not only analyzed a variety of disinfection by-products, but also gave Thermo Fisher's solutions, and introduced innovatively developed online electrolytic eluent generation technology and electrolytic water technolo.
There are both technologies and solutio.
Have you seen Chen Jie's professionalism? At the end of the live broadcast, Zhang Tianyang analyzed the "Generation Mechanism and Control Strategies of Emerging Iodine Disinfection By-products in Drinking Wate.

The emerging iodine-based disinfection by-products are widely distributed, highly toxic, and have peculiar odo.

In recent years, the attention has risen significant.

It can also be seen that the upcoming national standard will also pay more attention to the control of emerging disinfection by-produc.

So, how to effectively control iodine disinfection by-products? Zhang Tianyang believes that it can be considered from the multi-link and multi-barrier aspects such as the conversion or removal of iodine source, the reduction of precursor organic matter and the direct adsorption and oxidation of I-DB.

Part2: At 14:00 on May 26th, the comprehensive seminar on the new water method of GB5749 for drinking water - special session on inorganic pollutants Special guests: Ouyang Zheng, deputy director of testing of the ecological environment division of Guangzhou Radio and Television Metrology and Testing .

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, application engineer of Thermo Fisher Ye Run and Li Zhenxing, Technical Quality Supervisor, Nansha Laboratory, Guangzhou Analysis and Testing Center, Chi.

With Ouyang Zheng taking the lead, the theme sharing on "Monitoring Technology of Inorganic Pollutants in Drinking Water" start.

According to Ouyang Zheng, the water quality inorganic pollutant indicators in the "Drinking Water Sanitation Standard (GB5749-2022)" include 10 conventional indicators, 10 water quality expansion indicators, and 3 water quality reference indicato.

As can be seen, inorganic contaminants are an important consideration in drinking water monitori.

At present, the main inorganic pollutant monitoring technologies include atomic absorption method, atomic fluorescence method, plasma emission spectrometry (ICP-AES), plasma mass spectrometry and so .

What is the measurement content of each technology? How is the measurement procedure? But come to the live room to take good not.

Immediately afterwards, Ye Run brought a powerful "New Version of Elemental Analysis Solution for Drinking Wate.

In addition to the "Drinking Water Hygiene Standard (GB5749-2022)", Ye Run also introduced the element analysis technology in the draft for the new water law's supporting test method "Standard Test Method for Drinking Water" (GB/T 575
The content of the changes of the indicators analyzes the current status of elemental analysis from a more comprehensive perspecti.

I have to mention that Thermo Fisher has a variety of elemental analysis solutio.

Have you heard of AAS, ICPOES, ICP-MS, and LC/IC-ICPMS? Ye Run introduced their respective characteristics and advantag.

The second review may also provide you with new ideas for elemental analysis~ Surprise appearance! Li Zhenxing discussed with the audience "Application and Strategy Skills of Graphite Furnace Original Suction in the Detection and Analysis of Metal Elements in Drinking Wate.

Why choose graphite furnace original suction? Li Zhenxing said that this method has low detection limit, good precision and wide application range, and is one of the most important metal element detection and analysis metho.

Focusing on this method, Li Zhenxing explained from different aspects, such as metal element pretreatment skills and precautions, configuration skills of solution and standard curve, interference judgment and applicability judgment of standard addition method, data processing skills and quality control metho.

Full of dry goods, get it here! Part3: At 14:00 on May 27th, the comprehensive seminar on the new water method of GB5749 for drinking water - special session on organic pollutants Special guests: Zhang Lan, researcher of the Environmental Institute of the Chinese Center for Disease Control and Prevention, and Yao Chao, GC/GCMS product application engineer of Thermo Fisher Scientific , Sun Yin, Small Molecule Application Engineer, Thermo Fisher Scientific (China) .

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, Shi Jian, Deputy Station Director and Technical Director of Shanghai Monitoring Station of National Urban Water Quality Monitoring Netwo.

The opening is a deep technical exploration! The "Detection Technology and Method of Organic Matter in Drinking Water" brought by Zhang Lan will push the live broadcast to a "climax"! Zhang Lan started from the whole development process of water quality testing technology, and briefly analyzed the proposed revision, deletion and new indicators and testing methods in the GB/T5750 draft for commen.

Importantly, from the mouths of experts, we have learned that the collection and preservation of organic samples requires attention to the selection of containers, the washing methods of containers and standardized collection procedur.

In addition, Zhang Lan also introduced the detection methods of organic pollutants such as purge and trap gas chromatography, headspace gas chromatography, headspace capillary column gas chromatography, liquid chromatography tandem mass spectrometry, e.

Come and learn! The orgasm continues! Yao Chao gave a detailed interpretation of "The Application of Thermo Fisher Temperament in the New National Standard for Drinking Water Testing"~ HS-GC-FID method, HS-GC-ECD method, P&T-GCMS method, SPME-GCMS method, derivative solution Liquid extraction gas chromatography and other methods, as well as Thermo Fisher's independent technology - CSR large volume injection technolo.

The measurement range includes volatile organic compounds, halogenated hydrocarbons, semi-volatile organic compounds, dichloroacetic acid, trichloroacetic acid,e.

By the way, Yao Chao also introduced several testing instruments from Thermo Fisher in the live broadcast, including liquid autosampler, TRACE 1600 Series GC, ISQ 7610 GC-MS, e.

, each with its own characteristi.

Learn about Thermo Fisher and the detection technolo.

Let’s review the live broadcast~ Shi Jian, with the title of “Research on the Detection of Pesticide Organic Compounds with Chinese Control and Non-National Control Characteristics in Drinking Water”, provides us with a subdivision idea for the detection of pesticide organic compoun.

According to the data, in 2019, nearly 4 million tons of pesticides were used in China, and China is also one of the countries that use more pesticid.

Shi Jian believes that China's pesticide use rate is still hi.

Therefore, pesticide detection shows importan.

Based on existing experience, Shi Jian believes that the mainstream technology in the future will be based on chromatography-tandem mass spectrometry technolo.

In addition, the speaker also shared innovative thinking and improvement attempts in different technologi.

For example, advancing the development of large-volume sampling technolo.

Are you interested in the establishment of 26 pesticide detection methods and the research on characteristic pesticide process removal? "Gold rush" in the live broadcast room, I see it! Finally, back to the big topic of technology again, Sun Yin shared Thermo Fisher's valuable LC/LCMS technology for everyo.

The workload of water quality analysis is large and compl.

Thermo Fisher, as one of the important companies in the monitoring industry, Sun Yin said that the company has a say in the whole process solution of water quality analys.

The characteristics of water quality analysis by liquid chromatography-mass spectrometry were analyzed from four dimensio.

In addition, under the analysis of many cases of water quality monitoring methods, Thermo Fisher is overcoming some of the more troublesome water pollution problems in the indust.

What do you say? Check back for answers! At this point, the three live broadcasts have officially end.

Thank you to all environmentalists for your attention and support for this comprehensive seminar on the new water law of drinking water GB5749! At the same time, you are also welcome to collect the live broadcast room, and review the three consecutive series immediately~