| Metrology area, Sub-field | Chemistry and Biology, Inorganics |
| Description | Trace elements (As, Cd, P and Na) in Yerba mate |
| Time of measurements | 2021 |
| Status | Approved |
| Final Reports of the comparisons | |
| References | |
| Measurand | Amount-of-substance of As, Cd, P and Na in mg/kg Nominal ranges: from 0.02 mg/kg to 1 mg/kg for As from 0.1 mg/kg to 5 mg/kg for Cd from 1 mg/kg to 100 mg/kg for Na from 500 mg/kg to 5000 mg/kg for P |
| Parameters | Trace elements: Arsenic (As), Cadmium (Cd), Phosphorus (P) and Sodium (Na) |
| Comparison type | Supplementary Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | SIM (Inter-American Metrology System) |
| Comments | Yerba mate (Ilex paraguariensis, Aquilfoliaceae) is a native plant which grows in the subtropical regions of South America: Paraguay, Brazil, Argentina and Uruguay. It is consumed as an infusion called “mate” in the beforementioned countries as well as all around the world as tea. Due to safety reasons the mass fraction of arsenic and cadmium is constantly monitored. Besides, the mass fraction of nutrients as sodium and phosphorus is also measured for labeling purposes. The aim of this comparison is to enable NMIs/DIs to demonstrate their competence in the determination of elements at low and high levels in a vegetal material within the high silica content category. The pilot study SIM.QM-P25 is associated to SIM.QM-S11. |
| Pilot institute |
LATU
Laboratorio Tecnologico del Uruguay Uruguay |
| Contact person | María Cecilia Geisenblosen +59826013724 |
| Pilot laboratory | |
|---|---|
| LATU |
Laboratorio Tecnologico del Uruguay, Uruguay, SIM |
| CENAM |
Centro Nacional de Metrologia, Mexico, SIM |
| EXHM/GCSL-EIM |
National Laboratory of Chemical Metrology/GCSL - Hellenic Institute of Metrology, Greece, EURAMET |
| HSA |
Health Science Authority, Singapore, APMP |
| INACAL |
National Institute for Quality, Peru, SIM |
| INM (CO) |
Instituto Nacional de Metrología de Colombia, Colombia, SIM |
| INMETRO |
Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| ISP |
Instituto de Salud Pública, Chile, SIM |
| LACOMET |
Laboratorio Costarricense de Metrologia, Costa Rica, SIM |
| MIRS/IJS/F-2,O-2 |
MIRS/Jozef Stefan Institute/Low and Medium Energy Physics F2, Environmental Sciences O2, Slovenia, EURAMET |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
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