Full of goodies!

[Pharmaceutical Network Conference Forum] The new national standard "Sanitation Standards for Drinking Water" (GB 5749-2022) has attracted attention and discussions from all walks of life since its release in March 202This standard is a national mandatory standard, which specifies the normative control requirements for drinking water supply, water source water, water production, water delivery, water storage, e.
The whole process of water supply contr.
At the same time, the new standard strengthens the management and control requirements for disinfection by-products, and adds detection methods for disinfection by-produc.
On the afternoon of June 9, the online live forum [Interpretation of the new GB 5749 standard for drinking water-disinfection by-products and element indicators] co-hosted by Tongju Media, Environmental Protection Online, and PerkinElmer was launched on ti.
From researcher Zhang Lan, director of the Water Quality and Health Monitoring Office of the China Institute of Disease Control and Environment, Liu Li, ICP-MS technical support for PerkinElmer's inorganic production line, and Ma Jiping, director of the School Analysis and Testing Center, Deputy Dean of the School of Environmental and Municipal Engineering, Qingdao University of Technology Participated in this online forum and made relevant interpretations on the content of the new GB 5749 standa.
The whole live broadcast was full of splendid and dry goo.
What rich content did the experts share? Quickly follow the editor to review it! Click on the picture or scan the QR code to review the live broadcast "Control Requirements and Detection Technology of Disinfection By-products in Drinking Wate.
Researcher Zhang Lan, Director of the Water Quality and Health Monitoring Office of the Institute of Disease Control and Environment, made a presentation entitled "Disinfection By-products in Drinking Wate.
The report "Control Requirements and Detection Technology" introduced the significance and disinfection methods of drinking water disinfection, the control requirements for disinfection by-products, and the detection methods of disinfection by-produc.
Researcher Zhang Lan introduced that the new standard has gradually strengthened the control requirements for disinfection by-products, which is reflected in the transition from simple biological risk control to both biological risk control and chemical risk control (reducing the high limit of residual chlorine); Sanitary license management is implemented for disinfection equipment; trihalomethanes and haloacetic acids are also included in the routine indicators, and chlorate testing requirements are added for hyposodium disinfection, and the requirements for by-product determination of compound chlorine dioxide are refined; new standards are still in New DBPs such as NDMA, iodoacetic acid have been added to the append.
For the detection method of halogenated hydrocarbons, one of disinfection by-products, the new standard adds headspace capillary column gas chromatography-ECD detector and purge-and-trap gas chromatography-mass spectrometry on the basis of the origin.
Researcher Zhang Lan introduced the detection method in deta.
For the detection of haloacetic acid, the new standard adds two methods, ion chromatography-conductivity detector and high performance liquid chromatography-tandem mass spectrometry, on the basis of liquid-liquid extraction-derived gas chromatography; the new standard p-chlorophenol On the basis of the original derivative gas chromatography ECD detector and SPME gas chromatography-ECD detector, the SPE gas chromatography-mass spectrometry method is add.
Finally, regarding the development trend of disinfection by-product detection methods, researcher Zhang Lan believes that disinfection by-product detection methods are developing in the direction of high throughput, high sensitivity, combined with mass spectrometry, pre-treatment technology, as well as automation and green environmental protecti.
"Application of ICP-MS technology in the analysis of total and speciation of elements in water quality" PerkinElmer inorganic production line ICP-MS technical support Liu Li introduced the application of ICP-MS technology in water quality detection, Liu Li from GB The changes of 5749 and GB 5750 are expanded, and the updated contents of GB5749 compared with the old version are introduc.
The water quality indicators of the new standard are adjusted from 106 to 97, and the water quality reference indicators are increased from 28 to 5Then Liu Li introduced PerkinElmer's special solutions for ICP-MS technology in the analysis of the total and speciation of elements in water, such as intelligent electronic dilution technolo.
Afterwards, Li Liu introduced the biggest change in GB 5750 elemental analysis - the addition of elemental speciation analysis metho.
PerkinElmer also has abundant solutions in elemental speciation analys.
NexION series ICP-MS provides exceptional stability, excellent anti-interference ability and excellent acquisition speed; comprehensive HPLC/GC ICP-MS solution to meet the challenges of various elemental speciation analysis; integrated workstation, easy-to-use software, functional Powerful and easy to realize routine inspection of morphological analys.
"GB 5749-2022 <Sanitary Standard for Drinking Water> Water Quality Sample Pretreatment Technology Analysis" Ma Jiping, deputy dean of the School of Environmental and Municipal Engineering, Qingdao University of Technology, and director of the school's analysis and testing center, mainly introduced the relevant heavy metals and organic compounds in the new GB 5749 standa.
As well as the pretreatment technology of water quality samples in the aspect of morphological analysis, the sample pretreatment technology for the determination of organic substances such as disinfection by-products in water is mainly introduc.
Director Ma's report is detailed and specific and full of knowledge poin.
The editor's key points are as follows: Sample pretreatment technology for volatile organic compounds analysis in water ↑ Sample pretreatment technology for semi-volatile and non-volatile organic compounds analysis in water ↑ Then, Director Ma respectively The sample pretreatment techniques for the determination of volatile organic compounds such as disinfection by-products in water (volatile halogenated hydrocarbons, nitrosamines, odorous substances), and the sample pretreatment techniques for the determination of different forms of metals in water (methyl mercury and ethyl mercury) were introduc.
), sample pretreatment techniques for the determination of new pollutants in water (perfluorinated compounds, PPCPs, pesticides),e.
The three experts delivered a detailed interpretation of the new standard through the live broadca.
The two-hour time was so short but the harvest was continuo.
If you missed the live broadcast, please click the live link to review it!