ISO 21863:2020
[Current]
Water quality — Determination of alkylmercury compounds in water — Method using gas chromatography-mass spectrometry (GC-MS) after phenylation and solvent extraction
...ss concentration of internal standard (is) in the reference
solution, in micrograms per litre, g/l;
m
i,is,e
is the slope of the calibration curve from y
i,e
/y
is,e
as a function of the mass concentration ratio
i,e
/
is,e
, often called the resp...
...A lower or higher value indicates
an insufficient efficiency of phenylation and extraction or co-extraction of interfering substances for
mass spectrometric measurement, respectively...
...ss concentration
i,g
of target substance i in accordance with Formula (3) after solving
Formula (1):
i
i
is
iis
is
iis
y
y
b
m
,
,
,
,,
,
,,
g
g
g
e
g
e
=
(3)
ISO 2020 All rights reserved 9
ISO 21863:2020(E)
where
y
i,g
is the meas...