tiontú ppm go ppt

Conas ppm a thiontú go ppt

Sainmhínítear ppm agus ppt mar:

1ppm = 1/10 ⁶ = 10 ^-6

1ppt = 1/10 ¹² = 10 ^-12

Mar sin

1ppm = 10 ⁶ ppt

Tá líon na gcodanna in aghaidh an trilliún x _ppt cothrom le líon na gcodanna-in aghaidh an mhilliúin x _ppm arna iolrú faoi 10 ⁶ :

x _ppt = x _ppm ⋅ 10 ⁶

Sampla: Tá 7ppm cothrom le 7000ppb:

x _ppt = 7ppm ⋅ 10 ⁶ = 7000000ppt