Concentration of a Solution. 4 ppb = 4 μg/kg

Concentration of a Solution. 4 ppb = 4 μg/kg

1 ppb = (1 g 용질 / 10^9 g 용액) × 10^9

( 참고 https://ywpop.tistory.com/2657 )

4 ppb

= 4 μg/kg

= 4 μg 용질 / 1 kg 용액

---> 1 kg 용액 속에

4 μg 용질이 들어있는 용액 = 4 ppb 용액

[4 μg × (1 g / 10^6 μg)] / [1 kg × (1000 g / 1 kg)] × 10^9

= [4 × (1 / 10^6) g] / [1 × (1000) g] × 10^9

= 4 ppb

[키워드] ppb 용액 기준