First report of pharmaceuticals and personal care products in the sea-ice of Larsemann Hills, Eastern Antarctica

Balakrishna, Keshava and Vijayasarathy, Soumini and Praveenkumarreddy, Yerabham and Gopal, Chikmagalur and Eaglesham, Geoffrey and Jiang, Hui and Bhat, Krishnamurthy (2018) First report of pharmaceuticals and personal care products in the sea-ice of Larsemann Hills, Eastern Antarctica. In: Dioxin 2018, 26/08/2018, Krakow,Poland.

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Antarctica, the most pristine continent on earth is attracting increasing human presence in recent years owing to the rise in scientific activities and tourism. To investigate if there are any signals of anthropogenic footprint on the sea-ice, we chose a small area spanning about 100 sq km in Eastern Antarctica, in the Larsemann Hills where research stations from four countries (India, China, Russia, Romania) are located. The objective of the study was to investigate if there are any significant concentrations of personal care products, pharmaceuticals and pesticides in the frozen ocean in this region. Sampling was done in the austral summer between November 2017 and February 2018 spread across an area of 100 sq km. An LC-MS-MS method was developed and elution by SPE extraction for the detection of selected compounds. Out of the 24 target analytes investigated, five of them (paraxanthine, caffeine, nicotine, salicylic acid, triclosan and hydrocholorothiazide) were detected at the levels of nanogram per liter. Paraxanthine ranges from 0 to 18 ng L-1, caffeine ranges from 0 to 164 ng L-1, salicylic acid from 0 to 72ng L-1, triclosan from 0 to 17ng L-1 and hydrocholorothiazide from 0 to 1.7ng L-1. The most prominently noted stimulant was nicotine with concentrations upto 700 ng L-1. Their source could be from the wastewater effluents of the scientific research stations and the scientific ships visiting the area. This is the first reported study from the Larsemann Hills. Further investigations are needed to understand the effect of exposure of these compounds on the flora and fauna of this region.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: PPCPs, Eastern Antarctica, wastewater
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 15 Jan 2019 08:52
Last Modified: 15 Jan 2019 08:52

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