Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies
HPLC Method for Analysis of Tartrazine on BIST A Column by SIELC Technologies
High Performance Liquid Chromatography (HPLC) Method for Analysis of Tartrazine
Tartrazine is a popular yellow synthetic dye used in a multitude of food and cosmetic products. Using SIELC’s newly introduced BIST™ method, tartrazine, which ionizes in water, can be retained on a negatively-charged, cation-exchange BIST™ A column. There are two keys to this retention method: 1) a multi-charged, positive buffer, such as N,N,N’,N’-Tetramethyl-1,3-propanediamine (TMDAP), which acts as a bridge, linking the negatively-charged tartrazine analytes to the negatively-charged column surface and 2) a mobile phase consisting mostly of organic solvent (such as MeCN) to minimize the formation of a solvation layer around the charged analytes. The effect of reducing the solvation layer by increasing the organic component concentration in the mobile phase can be clearly seen above, as can the effect of multi- and singly-charged buffers on retention. Other positively-charged buffers that can generate BIST™ include Calcium acetate and Magnesium acetate. Using this new and unique analysis method, tartrazine can be retained and UV detected at 260 nm.
Condition
| Column | BIST™ A, 4.6×150 mm, 5 µm, 100A |
| Mobile Phase | MeCN |
| Buffer | TMDAP formate pH 4.0 – 5,0 mM |
| Flow Rate | 1.0 ml/min |
| Detection | 260 nm |
Description
| Class of Compounds | Acid, Dye |
| Analyzing Compounds | Tartrazine |
Application Column
BIST A
BIST™ columns offer a unique and effective way to achieve separations that were traditionally challenging or even impossible with other HPLC columns. With the use of a special mobile phase, these ion exchange columns provide very strong retention for analytes with the same charge polarity as the stationary phase, unlocking new chromatography applications. What makes BIST™ columns stand out is their proprietary surface chemistry, which results in superior selectivity, resolution, and sensitivity. These columns offer a simple, efficient solution for a variety of analytical challenges, making them an excellent choice for researchers and analysts across many different fields. To learn more about the technology that powers BIST™ columns and to explore related applications, check out https://BIST.LC.
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