For a long time, food, drinking water and other industries have paid great attention to the detection of bromate, nitrite and other toxic and harmful substances, even carcinogens. For example, many beverage manufacturers need to carry out nitrite quality control on all aspects of product process and finished products, and bottled drinking water also needs to detect the content of bromate and bromate.

The rapid detection equipment is widely used because of its advantages of low price, easy to carry and short test time. However, the following problems are that the sensitivity of the rapid detection equipment is not high, and it is unable to detect the above-mentioned target substances of ppb and sub ppb level, and the stability performance is general. In contrast, ion chromatography has excellent sensitivity (sub ppb level) for the detection of electrolyzable inorganic anions such as bromate, nitrite, bromide, etc., good stability and simultaneous detection, almost no pretreatment operation is required, and the whole analysis time is kept within 20 minutes. Therefore, drinking water or beverage manufacturers slowly turn their attention to ion chromatography.

SHINE CIC-D120 or CIC-D160 ion chromatograph combined with hydrogen peroxide system column can realize the effective detection of bromate, nitrite and bromine ion of sub ppb level, with first-class detection stability and reliability. Among them, CIC-D160 has been shortlisted as "outstanding new products of scientific instruments" in 2014, and recently won the 2019 "user's favorite instrument in scientific instrument industry" award, which is highly praised by users. It has been used in Wahaha, UNI-PRESIDENT, Laoshan mineral water and other beverage companies, as well as the third-party testing institutions such as CTI and PONY.

 1. Analysis conditions

Instrument: CIC-D120 

Column: SH-AP-1

Eluent:  15mM KOH       

Flow rate: 0.7mL / min 

Column pressure: 11.3Mpa 

Detection method: suppressed conductivity method

Injection volume: 200uL 

Column temperature:35℃

Suppression current: 50 mA

2.Standard spectrum

10ppb mixed standard spectrum of bromate, nitrite and bromide

3.Noise and detection limit

The noise of the instrument is 0.397 nS/cm and the minimum quantitative detection concentration is 0.4 ppb when the sample is not injected for 30 minutes.