Pollution in the Arctic is so sorry that chemicals are accumulating in polar bear mother ’s milk and getting decease onto bear cubs .
A new analytic thinking of pollutants in the Arctic has found that frigid bear are at a particularly high risk , liken to other animals like seals .
The report was published inthe journal Environmental Toxicology and Chemistryin December and focused on a class of pollutants know as persistent organic pollutants ( pop ) . POPs are toxic , hang around for a long meter , and tend to build up in the body of human beings and animals .
For the study , research worker collected data point over a turgid sector of Arctic and sub - gelid regions , which considered intellectual nourishment chains , diets of animals , concentration of POPs and the surrounding environs . The scientists estimated concentrations of 19 chemicals in Arctic cod , ringed seal , and polar bears .
Their finding including some surprising take - aways . First , the risk of pertinacious organic pollutant ( popping ) was two orders of order of magnitude higher than the base hit doorstep for the grownup polar bears , which is a departure of about 100 times as much . But it was even high-pitched — three guild of order of magnitude above , or 1,000 fourth dimension — for the bear cubs .
Like baby humans , gelid bear cubs trust on their mother ’s milk as their main source of food , and they are looked after in this wayfor about 20 months . For comparison , seal whelp drink their female parent ’s milkfor just a month — they feed in on two and a half litres of it every day , and grow by as much as 30 kg in two hebdomad . This means that polar bear sonny boy are exposed to cumulate chemical substance from their mothers for a lot longer , and why the risk of infection of soda water was therefore shown to be pretty low for stamp .
The field made it clear that since the 1980s , there had been a mensurable decrease in the endangerment of POPs for bear lad , principally thanks to outside control measuring rod . But the composition of dada changes constantly , and the late add-on of young POPs into the surroundings , especially something called perfluorooctane sulfonate , which was used in fabric defender , increased since the forties until it was banned in the early 2000s .
" The termination exhibit that outside control standard are good at reducing the peril to ecosystem , " order cobalt - lead author Marco Vighiin a financial statement . " Nevertheless it is fundamental to continuously enforce the restraint of new and emerging contaminants .
Read the original article onTech Insider . Copyright 2016 .
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