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  3. Chemistry; Chem Sci/Eng

spiked sample

Italian translation: campione fortificato (con quantità nota di analita)

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:spiked sample
Italian translation:campione fortificato (con quantità nota di analita)
Entered by: Marco Solinas

22:00 Apr 22, 2010
English to Italian translations [PRO]
Science - Chemistry; Chem Sci/Eng
English term or phrase: spiked sample
From a procedure for determinimg formaldehyde in contaminated samples:
"If particular samples demand the use of an alternative cleanup procedure, the analyst must determine the elution profile and demonstrate that the recovery of formaldehyde from a *spiked sample* is greater than 85%."
Marco Solinas
Local time: 01:30
campione fortificato (con quantità nota di analita)
Explanation:
In queste fase di ottimizzazione il campione di mitili omogeneizzati viene fortificato (spike) con 2 μl di una miscela di standard di PCB (0.77 ppm) che contiene 12 PCB diossina simili, per avere una concentrazione su 1 g di mitili freschi pari a 1,54 μg/kg.
http://www.openstarts.units.it/dspace/bitstream/10077/3165/1...

7.4.5 Spiked sample
A test material with a known addition of analyte.

The sample is analyzed with and without the spike to test recovery (see 7.5.6). It should be a realistic surrogate with respect to matrix and concentration. The mixture should be well homogenized.

The requirement "realistic surrogate" is the main problem with spikes. Often the analyte cannot be integrated in the sample in the same manner as the original analyte, and then treatments such as digestion or extraction may not necessarily reflect the behaviour of real samples.
http://www.fao.org/docrep/W7295E/w7295e09.htm

Gli standard aggiunti sono, a loro volta suddivisi in due categorie; entrambe richiedono che una quantità nota di standard (spike) venga addizionata ad ognuno dei campioni da analizzare.
http://zyxel-nsa210.lilu2.ch/MyWeb/public/chimica/Parisi/LAM...

Fortificazione/Spiking
Fortificazione: immissione nel bianco (o nella matrice in esame) di una quantità nota (spike) di analita, al fine di eseguire verifiche della qualità del risultato (per esempio per valutare il limite di rivelabilità o il recupero).
http://www.openstarts.units.it/dspace/bitstream/10077/3165/1...
Selected response from:

texjax DDS PhD
Local time: 04:30
Grading comment
Thank you Texjax: As reliable as usua. It really helped a lot.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +2campione fortificato (con quantità nota di analita)
texjax DDS PhD


  

Answers


21 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +2
campione fortificato (con quantità nota di analita)


Explanation:
In queste fase di ottimizzazione il campione di mitili omogeneizzati viene fortificato (spike) con 2 μl di una miscela di standard di PCB (0.77 ppm) che contiene 12 PCB diossina simili, per avere una concentrazione su 1 g di mitili freschi pari a 1,54 μg/kg.
http://www.openstarts.units.it/dspace/bitstream/10077/3165/1...

7.4.5 Spiked sample
A test material with a known addition of analyte.

The sample is analyzed with and without the spike to test recovery (see 7.5.6). It should be a realistic surrogate with respect to matrix and concentration. The mixture should be well homogenized.

The requirement "realistic surrogate" is the main problem with spikes. Often the analyte cannot be integrated in the sample in the same manner as the original analyte, and then treatments such as digestion or extraction may not necessarily reflect the behaviour of real samples.
http://www.fao.org/docrep/W7295E/w7295e09.htm

Gli standard aggiunti sono, a loro volta suddivisi in due categorie; entrambe richiedono che una quantità nota di standard (spike) venga addizionata ad ognuno dei campioni da analizzare.
http://zyxel-nsa210.lilu2.ch/MyWeb/public/chimica/Parisi/LAM...

Fortificazione/Spiking
Fortificazione: immissione nel bianco (o nella matrice in esame) di una quantità nota (spike) di analita, al fine di eseguire verifiche della qualità del risultato (per esempio per valutare il limite di rivelabilità o il recupero).
http://www.openstarts.units.it/dspace/bitstream/10077/3165/1...


texjax DDS PhD
Local time: 04:30
Works in field
Native speaker of: Native in ItalianItalian
PRO pts in category: 137
Grading comment
Thank you Texjax: As reliable as usua. It really helped a lot.

Peer comments on this answer (and responses from the answerer)
agree  Panagiotis Andrias (X)
7 hrs
  -> grazie
agree  enrico paoletti
9 hrs
  -> grazie Enrico
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