Seasonal occurrence and risk assessment of pharmaceutical and personal care products in Bengaluru rivers and lakes, India

Gopal, Chikmagalur Mallappa and Bhat, Krishnamurthy and Ramaswamy, Babu Rajendran and Kumar, Virendra and Singhal, Rakesh Kumar and Basu, Hirekendu and Udayashankar, H N and Vasantharaju, SG and Praveenkumarreddy, Yerabham and shailesh, . and Lino, Yovan and Balakrishna, Keshava (2021) Seasonal occurrence and risk assessment of pharmaceutical and personal care products in Bengaluru rivers and lakes, India. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 9. ISSN 0927-7757

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Water samples were collected from 35 locations in the Arkavathi river, its tributaries and lakes spread across the Bengaluru metropolitan area in Southern India during monsoon (October 2018) and post-monsoon (February 2019) seasons. Eleven pharmaceutical and personal care products (PPCPs) (sulfamethoxazole, chloramphenicol, ethyl paraben, diclofenac, propylparaben, ibuprofen, BP-1, oxybenzone, bisphenol A, triclosan, triclocarban) were investigated for their occurrence, seasonal variation, and toxicological effects on the biota. The PPCPs belong to different classes like non-steroidal anti-inflammatory drugs, antibiotics, antibacterials, UV-filters, plasticizer, and preservatives. Ibuprofen was present in high concentrations (1834 ng/L) followed by triclosan (1761 ng/L) and diclofenac (1130 ng/L) in the river. Samples collected during monsoon season had lower concentrations of sulfamethoxazole, chloramphenicol and diclofenac whereas rest of the target analytes had lower concentrations during post-monsoon season. Dilution in monsoon season and adsorption to the sediments in the post-monsoon season can be the possible reasons for the seasonal variability. The highest detection frequencies of PPCPs at the Arkavathi river indicates the continuous discharge of wastewater from highly populated metropolitan and industrial areas. The ecotoxicity data for diclofenac and triclosan suggest high risk (Hazard Quotient >1) for various species of fish and algae observed from the Kumbalagodu (S20) and Shanumangala (S19) stations respectively from the mid-stream of Arkavathi river. It was followed by bisphenol A with a hazard quotient of 0.88 in Banashankari (S25) that can affect specific species of fish. No human health risk assessment was estimated from the identified sampling stations. This is the first report on seasonal occurrence of PPCPs with their associated toxicological studies from the Arkavathi river, its tributaries, and lakes across the Bengaluru metropolis.

Item Type: Article
Uncontrolled Keywords: Arkavathi river Hazard quotient PPCPs Risk assessment
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 06 Oct 2021 09:37
Last Modified: 06 Oct 2021 09:37

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