MUMBAI, India, Feb. 13 -- Intellectual Property India has published a patent application (202641008174 A) filed by Dr. Konda Swathi, Tirupati, Andhra Pradesh, on Jan. 28, for 'a uv-visible spectrophotometric method for determination of bifenthrin in water samples using chemical derivatization.'
Inventor(s) include Dr. Konda Swathi; Cheboyina Pallavi; Mantada Uma Devi; Allu Keshavardhini; Dumpala Likhitha Reddy; Eereti Niharika; Harish Vaishnavi; Kolli Yamini; Y Divya Spandana; and Nelaballi Prajwala.
The application for the patent was published on Feb. 13, under issue no. 07/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an analytical technique for the quantitative determination of bifenthrin using ultraviolet-visible spectrophotometry in water samples. The method involves extraction of bifenthrin from an aqueous matrix, chemical derivatization using 4-dimethylaminobenzoyl chloride to form a UV-active ester derivative, and spectrophotometric measurement at 336 nm. The analytical approach is characterized by simplicity of sample preparation, reproducibility of absorbance response, and suitability for routine quality control analysis. The method demonstrates linearity over a defined concentration range and provides acceptable precision and accuracy when assessed under controlled conditions. The disclosed approach minimizes the requirement for complex instrumentation and reduces analytical time compared to chromatographic techniques. The invention is particularly useful for laboratories engaged in quality assessment of insecticidal formulations containing bifenthrin, where rapid and cost-effective analysis is desirable. The derivatization enhances detectability and minimizes spectral interference. The method is validated for linearity, accuracy, precision, sensitivity, and robustness, providing a cost-effective and reliable approach for environmental monitoring of bifenthrin residues. The method is industrially applicable and may be employed for batch release testing, stability studies, and routine monitoring of bifenthrin content."
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