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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Accuracy in sampling analysis could be determined by analyzing a reference material of known concentration (or value), or by re-analyzing a sample to which a material of known concentration has been added (recovery method). For example, if T is the total concentration of a water quality parameter in a spiked sample, U is the concentration of the same parameter in the unspiked sample, and A is the amount of the parameter added to the hitherto unspiked sample, the percent recovery R is calculated as R = 100(T-U)/A. The process is called "spiking".  1, record 1, English, - spiking

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

Procédé de validation des résultats d'un échantillonnage qui consiste à verser dans un deuxième échantillon la quantité d'une substance déjà mesurée dans un premier échantillon; si les résultats sont identiques la méthode d'analyse est donc validée.  1, record 1, French, - proc%C3%A9d%C3%A9%20par%20ajout%20connu

Record number: 1, Textual support number: 2 OBS

Renseignements fournis par un chimiste à Environnement Canada.  1, record 1, French, - proc%C3%A9d%C3%A9%20par%20ajout%20connu

Record 1,  Textual support,  Spanish