Response policy:
Monitoring Plan for Volatile Organic Compounds in Environmental Air of Key Areas in 2018
Monitoring Plan for Volatile Organic Compounds in Environmental Air of Cities at or above the Prefecture Level in 2019
Monitoring Plan for Volatile Organic Compounds in Environmental Air of Key Areas in 2020
Action Plan for Comprehensive Control of Air Pollution in the Fenwei Plain of Beijing Tianjin Hebei and Surrounding Areas in Autumn and Winter of 2020-2021
Implementation Plan for Air Pollution Control Action in 2021
Compliant with standards:
HJ 759-2015 Determination of volatile organic compounds in ambient air - Gas chromatography-mass spectrometry with sampling tank
HJ 1012-2018 Technical Requirements and Testing Methods for Portable Monitoring Instruments for Total Hydrocarbons, Methane and Non Methane in Environmental Air and Waste Gas
GB/T 14678-1993 Air quality - Determination of hydrogen sulfide, methyl mercaptan, methyl sulfide and dimethyl disulfide - Gas chromatographic method
HJ 1078-2019 Determination of 8 sulfur-containing organic compounds, including methyl mercaptan, in waste gas from fixed pollution sources
HJ/T 194-2005 Technical Specification for Manual Monitoring of Environmental Air Quality
Product Introduction:
Ontech 870 is an ultra-low concentration VOCs atmospheric pre concentrator. Adopting liquid nitrogen deep freezing and core cold trap technology, its concentration ratio is greater than 1000:1, which can be matched with any style of GC or GC-MS, and can continuously monitor volatile organic compounds in the ambient air online, fully meeting the requirements of national standards HJ759-2015, EPATO-14, and TO-15 methods. The unique hardware and software design enables it to process various gas samples more effectively.
Ontech 870 adopts the currently blank 3-level cold trap technology in China, with a freezing temperature of up to -190 ℃. One stage of the cold trap is highly efficient in removing water; Innovative adsorbent combination for secondary cold trap, efficient enrichment, and flash evaporation analysis; The three-stage focusing trap is deeply frozen, and then rapidly vaporized into GC at a heating rate greater than 2000 ℃/min, in conjunction with the invention of analytical technology. The equipment has an advanced temperature control system with a temperature control accuracy of ± 2 ℃, making the analysis more stable and accurate, and achieving perfect peak separation. The innovatively designed host integrates a 16 bit automatic sampler, eliminating the cost of configuring an automatic sampler and perfectly improving work efficiency in one stop.
Product advantages:
Hardware:
The classic three-stage cold trap (impurity removal, capture, focusing) pre concentration design fully matches EPA and national standards requirements; Innovative host integrated automatic sampler design eliminates the cost of customers purchasing automatic samplers separately;
Optimized secondary cold trap composite packing, with comprehensive adsorption that is not easily penetrated, can save 20% of liquid nitrogen usage; Focusing on the use of core flash evaporation analysis technology in cold traps to help achieve high-quality peak maps in the chromatographic section; The equipment can achieve low temperature of -190 ℃, high temperature of 350 ℃, heating rate of 2000 ℃/min, and temperature control accuracy of ± 2 ℃; The combination of equipment and quantitative loop can achieve a wide range of 1-2000ml direct injection, and MFC integral accumulation injection volume.
Software:
Compatible with any brand of GC-MS products and supports split injection; Equipped with a power on self-test function and designed with dual temperature protection for both software and hardware; Pre set EPA TO-15, PAMS, HJ759-2015 and other standard methods, easy to use with one click execution; Pre installed Ontech ecosystem software, Ontech products can be interconnected and matched freely through the laboratory LAN; The Chinese software has clear logic, completes all settings on the same interface, synchronizes real-time modifications, and supports multiple triggering modes; The main interface of the software integrates graphic control, dynamically displays each step, and is equipped with a progress bar, which is clear and easy to judge.
Application scenarios:
1. Fixed pollution source online or sampling analysis (point source monitoring)
2. Online monitoring of unorganized emissions at the factory boundary (factory boundary station)
3. Online atmospheric monitoring (air station/atmospheric station/regional control station/national station)
4. Environmental air sampling and detection (point sampling/encrypted sampling/daily average sampling)
5. GC-MS laboratory testing of atmospheric pre concentration pretreatment for Su Ma tank sampling