Dejun Instrument launches a new OIW-970 UV spectrophotometer to meet the new national standard for petroleum products

The Ministry of Ecology and Environment has released the "Water Quality Determination of petroleum and animal and vegetable oils Infrared spectrophotometry "," Water quality Determination of petroleum products Announcement of two national environmental protection standards, including UV spectrophotometry.

In order to implement the Environmental Protection Law of the People's Republic of China, protect the ecological environment, safeguard human health, and standardize ecological environment monitoring work, the "Water Quality Determination of petroleum and animal and vegetable oils Two standards, including Infrared Spectroscopy, are national environmental protection standards and have been published.

The standard name and number are as follows:

1The Water Quality Determination of petroleum and animal and vegetable oils Infrared spectrophotometry（HJ 637 - 2018）；

IIThe Water Quality Determination of petroleum products UV spectrophotometry (trial)（HJ 970 - 2018）.

The above standards are from2019year1moon1From now on, it will be implemented and published by China Environment Publishing House. The standard content can be found in the Ministry of Ecology and Environment**Search.

From the date of implementation of the above standards, the water quality Determination of petroleum and animal and vegetable oils Infrared spectrophotometry（HJ 637 -2012）Abolish.

In response to the new national standard for petroleum, Dejun Instrument launched a new product in December 2018OIW-970new-typeUV spectrophotometer oil analyzerSatisfyThe Water Quality Determination of petroleum products UV spectrophotometry (trial)（HJ 970 - 2018）The requirements,It is a new national standard designed specifically for the petroleum industry《HJ 970-2018water quality Determination of petroleum products A high-precision and highly reliable laboratory water oil analyzer developed by UV spectrophotometry using n-hexane as the extraction agent and an automatic liquid-liquid extraction system. It is used for the determination of petroleum in surface water, groundwater, and seawater, with a range of0.008~100mg/LThe detection limit is0.008mg/L.

Detection principle:

OIW-970UV spectrophotometer for oil analysispH≤2Under certain conditions, extract oil substances from the sample with n-hexane, filter and dehydrate them through a funnel with anhydrous sodium sulfate sand core, and then use a magnesium silicate column to adsorb and remove animal and plant oilsOIW-970Yu225nmAt the wavelength,One click measurementDirectly adjust the concentration of petroleum in the instrumentVSAbsorbance standard curve, direct reading of petroleum concentration.

Applicable water samples: surface water (including drinking water sources), groundwater, and seawater.

Applicable users: environmental protection and supervision, marine and maritime affairs, hydrology and water conservancy, university research institutes, third-party testing institutions, water treatment plants, sewage treatment plants, and various industrial enterprises.