2.2. Analytical determinationsThe d

2.2. Analytical determinations
The determination of Cd and Pb have been carried out
by Quadrupole Inductively Coupled Plasma Mass Spectrometry
(Q-ICP-MS) using an Elan 6000 spectrometer (Perkin Elmer Italia
S. Zaza et al. / Journal of Food Composition and Analysis 40 (2015) 148–153 149
S.P.A. Viale Dell’innovazione 3, 20126 Milano, Italy) equipped with
an ultrasonic nebuliser (U-5000 AT, CETAC Technologies 14306
Industrial Rd. Omaha, Nebraska, 68144 US, USA) and a cyclonic
quartz spray chamber. The Q-ICP-MS system was set up as follows:
RF power, 1050 W; lens voltage ranging from 7 to 8 V; nebuliser
gas flow ranging from 0.97 to 1.0 L min1; peristaltic pump speed,
1.0 mL min1. The following analytical masses 112Cd, 114Cd,
207Pb, 208Pb were selected for quantification. The internal
standardisation by 103Rh at a concentration of 2 mg L1 in the
analytical solutions was used to control for drifts of the instrument
and matrix effects.
Hg determination was obtained by flow injection cold vapour
atomic absorption spectrometry (FI-CV-AAS) using a FIAS 400 flow
injection mercury system (Perkin Elmer). NaBH4 0.2% w/v from
Merck (Merck MSD) and ultrapure HCl 3% v/v from Fluka (Sigma-
Aldrich Chemie GmbH Industriestrasse 25 CH-9471 Buchs SG
Switzerland) were used as the reductant and carrier, respectively.
Measurements were performed at a wavelength of 253.7 nm.
Different Certified Reference Materials (CRMs) such as BCR CRM
422 Cod Muscle (IRMM, Institute for Reference Materials and
Measurements. Contact information Address: Retieseweg 111,
2440 Geel, Belgium), BCR 668 Mussel Tissue (IRMM, Belgium),
DORM-4 Fish Protein (NRC, 1200 Montreal Road Building M-58
Ottawa, Ontario K1A 0R6 Canada) and DOLT-3 Dogfish Liver (NRC,
Canada) were used to check the accuracy of analytical measurements.

ผลลัพธ์ (อังกฤษ) 2:

2.2. Analytical determinations
The determination of Cd and Pb have been carried out
by Inductively Coupled Plasma Mass Spectrometry Quadrupole
(Q-ICP-MS) using an Elan 6000 spectrometer (Perkin Elmer Italia
S. Zaza et al. / Journal of Food Composition and Analysis 40 (. 2015) 148-153 149
S.PA Viale Dell'innovazione 3, twenty thousand one hundred and twenty-six Milano, Italy) Equipped with
an ULTRASONIC Nebuliser (U-5000 AT, CETAC Technologies 14 306
Industrial Rd. Omaha, Nebraska, US 68144, USA) and a cyclonic
Quartz. spray chamber. The Q-ICP-MS System was SET up as follows:
RF Power, 1050 W; lens voltage ranging from 7 to 8 V; Nebuliser
gas flow ranging from 0.97 to 1.0 L Min1; Pump speed peristaltic,
1.0 mL Min1. The following analytical masses 112Cd, 114Cd,
207Pb, 208Pb were selected for quantification. The internal
standardization by 103Rh at a concentration of 2 mg L1 in the
analytical Solutions was used to Control for drifts of the Instrument
and Matrix effects.
Hg determination was obtained by flow Injection cold vapor
Atomic absorption spectrometry (FI-CV-AAS) using a. FIAS 400 flow
Injection Mercury System (Perkin Elmer). NaBH4 0.2% W / v from
Merck (Merck MSD) and ultrapure HCl 3% v / v from Fluka (Sigma-
Aldrich Chemie GmbH Industriestrasse 25 CH-9471 Buchs SG
Switzerland) were used as the reductant and Carrier, respectively.
Measurements were performed. at a wavelength of 253.7 NM.
Different Certified Reference Materials (CRMs) such as BCR CRM
422 Cod Muscle (IRMM, Institute for Reference Materials and
Measurements. Contact information Address: Retieseweg 111,
2 440 Geel, Belgium), BCR 668 Mussel Tissue (IRMM. , Belgium),
dorm-4 Fish Protein (NRC, 1 200 Montreal Road Building M-58
Ottawa, Ontario K1A 0R6 Canada) dolt-3 and Dogfish Liver (NRC,
Canada) were used to Check the accuracy of analytical measurements.