GIPS-1: Ginseng Root Reference Material for Pesticides, Trace Metals and other Constituents
The following tables show those constituents for which reference and information values have been established for this ginseng root reference material (RM).
The expanded uncertainty (UCRM) in the certified value is equal to U = kuc where uc is the combined standard uncertainty calculated according to the JCGM Guide  and k is the coverage factor. A coverage factor of two (2) was applied for all elements. It is intended that UCRM accounts for every aspect that reasonably contributes to the uncertainty of the measurement. All listed values are expressed on a dry mass basis.
|pentachlorobenzene (g)||0.645 ± 0.034|
|pentachloronitrobenzene (g) (f)||0.461 ± 0.018|
|pentachloroaniline (g)||0.355 ± 0.008|
|aluminium (d,e)||550 ± 72|
|boron (c,e)||9.1 ± 3.0|
|barium (c)||23.1 ± 7.0|
|calcium (c,d,e)||2990 ± 340|
|cadmium (c)||0.053 ± 0.012|
|copper (c,d,e)||6.01 ± 0.48|
|iron (c,d,e)||310 ± 60|
|potassium (c,d,e)||16 000 ± 600|
|magnesium (c,d,e)||2500 ± 140|
|manganese (c,d,e)||32.8 ± 3.4|
|molybdenum (c,d,e)||0.62 ± 0.10|
|sodium (c,d,e)||500 ± 60|
|nickel (c,d)||1.2 ± 0.4|
|phosphorus (c,d,e)||2530 ± 140|
|strontium (c,d,e)||52 ± 8|
|zinc (c,d,e)||17.5 ± 1.4|
The coding refers to the instrumental method of analyte determination.
- a – Isotope dilution inductively-coupled plasma mass spectrometry (ID-ICP-MS)
- b – Standard addition inductively-coupled plasma mass spectrometry (ICP-MS)
- c – Inductively-coupled plasma mass spectrometry (ICP-MS)
- d – Standard addition inductively-coupled plasma atomic emission spectroscopy (ICP-AES)
- e – Inductively-coupled plasma atomic emission spectroscopy (ICP-AES)
- f – Isotope dilution gas chromatography ICP-MS (ID-GC-ICP-MS)
- g – Isotope dilution gas chromatography mass spectrometry (ID-GC-MS)
This Reference Material (RM) is intended for use in the calibration of procedures and the development of methods for the determination of pesticides and major, minor, and trace constituent elements in ginseng root and other similar food, agricultural, and biological materials. A minimum sample mass of 250 mg is recommended.
Included in the overall combined uncertainty estimate (uc) are uncertainties in the batch characterization (uchar), uncertainties related to possible between-bottle variation (uhom), uncertainties related to short-term stability (ustability), and uncertainties related to inconsistency between the various measurement methods (umethod). Expressed as standard uncertainties, these components are listed in Table 3.
Date of issue: February 2016
Date of expiry: February 2021
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