Spectroscopy and Spectral Analysis, Volume. 42, Issue 9, 2818(2022)
Analysis of Heavy Metal Cd in Cereal-Based Complementary Foods for Infants and Young Children by Inductively Coupled Plasma Tandem Mass Spectrometry (ICP-MS/MS)
Figures & Tables(8)
Fig. 1. The mass spectrums of mixed standard solution (100 μg·L-1 Mo+1 μg·L-1 Sn+1 μg·L-1 Cd) in (a) H2 reaction mode and (b) NH3/He reaction mode
Fig. 2. The mass spectrums of mixed standard solution (100 μg·L-1 Mo+1 μg·L-1 Sn+1 μg·L-1 Cd) in O2 reaction mode
Fig. 3. Effect of O2 flow rate on the determination of Cd in standard reference material SRM 1568b
Fig. 4. The mass spectrum of 1 μg·L-1 Rh standard solution in O2 reaction mode
Table 1. Background equivalent concentration (BEC) obtained for Cd by using different reaction gases
View tableView in ArticleTable 1. Background equivalent concentration (BEC) obtained for Cd by using different reaction gases
Isotope Abundance
/%Mode Interfering ion Production BEC/(ng·L-1) H2 NH3/He O2 110Cd 12.49 On-mass 98Mo12C+, 97Mo13C+, 96Mo14N+, 94Mo16O+ 110Cd+ 36.5 15.8 7.52 111Cd 12.80 On-mass 98Mo13C+, 96Mo14N+, 95Mo16O+ 111Cd+ 30.9 9.70 3.06 112Cd 24.13 On-mass 100Mo12C+, 98Mo14N+, 96Mo16O+, 112Sn+ 112Cd+ 51.5 23.6 15.1 113Cd 12.22 On-mass 100Mo13C+, 97Mo16O+ 113Cd+ 40.3 11.7 6.03 114Cd 28.73 On-mass 100Mo14N+, 98Mo16O+, 114Sn+ 114Cd+ 55.2 31.4 18.9 116Cd 7.49 On-mass 100Mo16O+, 116Sn+ 116Cd+ 162 53.0 26.4
Table 2. Linear relationship and limits of detection (LODs) for Cd isotopes
View tableView in ArticleTable 2. Linear relationship and limits of detection (LODs) for Cd isotopes
Isotope Linear range
/(μg·L-1)Correlation
coefficient (R)LOD
/(ng·L-1)110Cd 0.012~10 1.000 0 5.16 111Cd 0.004~10 0.999 9 2.03 112Cd 0.016~10 0.999 8 11.8 113Cd 0.008~10 1.000 0 4.70 114Cd 0.020~10 0.999 9 13.4
Table 3. Analysis results of standard reference material (
n =6)View tableView in ArticleTable 3. Analysis results of standard reference material (
n =6)Standard reference material Certified
/(μg·kg-1)Found/(μg·kg-1) t test This method GB5009.268—2016 Rice flour (SRM 1566a) 22.4±1.3 22.1±1.0 22.7±1.6 p=0.23 Liaoning rice (GBW10043) 12.0±3.0 11.6±0.7 11.8±1.2 p=0.37 Sichuan rice (GBW10044) 18.0±2.0 18.4±0.6 18.7±0.8 p=0.24 Hunan rice (GBW10045) 190±20 186±11.3 193±14.1 p=0.18
Table 4. Analysis results of Cd content in cereal food for infants (
n =6)View tableView in ArticleTable 4. Analysis results of Cd content in cereal food for infants (
n =6)Sample Origin This method GB5009.268—2016 Found/(μg·kg-1) RSD/% Found/(μg·kg-1) RSD/% Millet flour for infants Jiangxi 7.26±0.31 4.3 7.19±0.36 5.0 Organic millet flour for infants Sichuan 5.12±0.19 3.7 5.20±0.23 4.4 Millet flour for infants Shanxi 3.38±0.10 3.0 3.31±0.12 3.6 Rice flour for infants Shanghai 6.05±0.21 3.5 5.97±0.18 3.0 Chicken mushroom porridge Japan 2.43±0.06 2.5 2.48±0.11 4.4 Salmon corn porridge Japan 2.08±0.07 3.4 2.03±0.08 3.9
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Song-tao CAI, Hua-lin XIE, Jian-hua HUANG. Analysis of Heavy Metal Cd in Cereal-Based Complementary Foods for Infants and Young Children by Inductively Coupled Plasma Tandem Mass Spectrometry (ICP-MS/MS)[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2818
Paper Information
Category: Research Articles
Received: Mar. 20, 2022
Accepted: May. 31, 2022
Published Online: Nov. 17, 2022
The Author Email: CAI Song-tao (cst127254@126.com)
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