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̴ 23(48ȸ) 14(26ȸ) ϼ , ϰ ð ҷ δ.
5 2 4ȸ, 6 4 11ȸ, 7 3 7ȸ 5~7 ߷ɵư, 8 Ĵ Ǻ ߷ . 6 Ǻ ߷Ƚ Ǯ̵ȴ.
Ϲ 12ÿ 2 ̿ ٰ ˷ , Ǻ 12ÿ 2 ̿ ߷ɵƴ.
ٸ 4 ķε ʰ ־ ׳ ִ δ.
߷ ð 1ð 13ȸ Ұ, ִ 5~6ð ߷ɵ 찡 2ȸ̳ ־.
ֱ 4Ⱓ Ǻ ߷Ȳ 캸 2020 7(17ȸ), 2021 13(22ȸ), 2022 23(48ȸ) ٰ 9(22ȸ) ٽ ߴ.
溸 ùε鲲 ż ˷ ظ ִ ̱ ϴ , Ǵ ñ 4 15Ϻ 10 15ϱ 6 ų ϰ ִ.
1ð ճ 0.120 ppm ̻ Ǻ, 0.3 ppm ̻ 溸, 0.5 ppm ̻ ߴ溸 3ܰ ߷ϸ 1Ҷ ʰϰ Ǹ ǿ ش ܰ ߷ ȴ.
ڵ Ǵ 1 ƴ϶ һȭ ֹȭչ ȭй Ű鼭 2 ̴. Ǹ ü , , ȣ ڱϿ ִ.