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English to Portuguese translations [Non-PRO]
Science - Geology | | English term or phrase: trip blanks | | A total of 35 groundwater samples, including three duplicate samples and three trip blanks, were collected. |
|   Carla LopesKudoZ activityQuestions: 591 ( 1 open) ( 5 without valid answers) ( 52 closed without grading) Answers: 1060
Portugal
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Carlos Quandt
Brazil
Local time: 18:11
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Automatic update in 00:
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1 hr confidence:  
5 mins confidence: peer agreement (net): +1 brancos de viagem
Explanation:
Em pt-br... só achei uma referência para pt-pt...
6.2.3 Branco de Viagem (aplicável somente a voláteis): No mínimo, dois frascos de amostras preparados no laboratório, por enchimento com água reagente, ...
www.inmetro.gov.br/Sidoq/pesquisa_link.asp?seq_tipo
Branco de viagem: um par de cartuchos como branco de viagem, (que permanecerá fechado durante todo o intervalo de amostragem e de transporte das amostras e ...
www.environ.com.br/.../resumo\Resumo de Métodos Ambientais%...
utilizou-se um único branco de viagem constituído por 'água pura' também ... branco de viagem, que se juntou ao conjunto de amostras colhidas durante esta ...
www.smasalmada.pt/ngt_server_acd/attachfileu.jsp?...
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Note added at 2 hrs (2010-10-18 17:00:29 GMT)
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Só para adicionar, a USEPA faz distinção entre "field blank" e "trip blank":
Field Blank: A sample of analyte free water poured into the container in the field, preserved and shipped to the laboratory with field samples.
Purpose: Assess contamination from field conditions during sampling.
Frequency: 1 blank/day/matrix or 1 blank/20 samples/matrix, whichever is more frequent.
Trip Blank: A clean sample of a matrix that is taken from the laboratory to the sampling site and transported back to the laboratory without having been exposed to sampling procedures. Typically, analyzed only for volatile compounds.
Purpose: Assess contamination introduced during shipping and field handling procedures. Frequency: 1 blank/cooler containing volatiles.
http://www.epa.gov/region3/esc/qa/pdf/blanks.pdf
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The translation workplace 
