Perovskite Quantum Dots Supplier - Alfa Chemistry

Pigment Analysis Services


As a professional quantum dot supply platform, Alfa Chemistry not only provides quantum dots, but also has been conducting quantum dot research to expand the application fields of quantum dots. Quantum dots also play an important role in the analysis of food safety. Our professional team including undergraduates, masters and doctoral students can bring you comprehensive and scientific services.

Pigment Analysis Services


In the modern food industry, synthetic pigments are widely used in various foods. However, due to the potential risks of synthetic pigments to human health, even if edible synthetic pigments such as lemon yellow and carmine are used, their dosage must be strictly controlled. In addition, for some pigments that have been forbidden to be used, such as malachite green, Sudan I, etc., the detection methods with higher precision and wider applicability can more effectively prevent these pigments from being used illegally. The fluorescence spectroscopy technology has the advantages of high sensitivity and rapid detection.


The technical experts of Alfa Chemistry provide a full set of customized services from carbon quantum dot products, quantum dots for pigment detection. For details, please consult our customer service staff.

According to customer needs, Alfa Chemistry can provide you with:

  • Detection of Edible Synthetic Pigments
  • Detection of Illegal addition of pigments
  • Result Analysis and Project Report

Detection mechanism

  • Edible synthetic pigments
  • Carbon quantum dots (CQDs) are synthesized using waste lemon peel as a carbon source for the detection of carmine in beverages. After anti-interference experiments, a variety of potential interference substances such as citric acid, sucrose, VC, etc. will only slightly interfere or no interference on the fluorescence quenching reaction of carmine. The detection range of this CQDs for carmine is 0.20~30.00 mg/L, and the feasibility of this method is verified by the determination of carmine in soft drinks.

  • Illegal addition of pigments
  • CQDs with good stability were synthesized using waste cigarette filters as carbon source, and Sudan Ⅰ in chili powder, chili sauce and tomato sauce was detected based on the FRET principle. The detection linear range of the fluorescent probe is 2.40~104.0 μmol/L (R2 =0.991), and the detection limit is 0.95 μmol/L. And under the interference of Cu2+, potassium sorbate, VC, etc., this method still has good selectivity to Sudan Ⅰ.

Core advantages

  • Professional technical team
  • Professional R&D team, PhD/Master, senior experts in the industry, many years of R&D experience, and many successful cases.

  • Advanced equipment and facilities
  • Large area of research and development site, comprehensive experimental equipment.

  • Rich project experience
  • More project accumulation, successful project cases, and multiple cooperative clients.

  • Cheap price
  • We provide customers with the most comprehensive services at the most favorable price, and help customers save scientific research funds reasonably.

Detection service process

Detection service process

With novel technology platform and professional scientist team, Alfa Chemistry offers clients a wide range of anti-inflammatory drug analysis services, and we promise to provide customized solutions to meet each customer's unique requirements.

Our customer service representatives are enthusiastic and trustworthy 24 hours a day, Monday to Friday. Please do not hesitate to contact us for more information or to discuss in detail, if you are interested in our services.

* It should be noted that our service is only used for research, not for clinical use.


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