Application of Soluble Membrane Filter in Simultaneous Determination of Trace Levels of Cadmium, Copper, Lead and Zinc in Food Additives by Inductively Coupled Plasma Atomic Emission Spectrometry

Zhen Ke Zhu; Jian Guo Chen; Xian Zhong Jin; Shao Hong Chen; Dan Yi Wei

doi:10.4028/www.scientific.net/AMR.236-238.2236

Paper Titles

Preparation of Water-Dispersible Nanoparticles by Self-Organization of Bio-Based Photo-Reactive Polymer
p.2216

Influence of Post-Treatment with Methanol Vapor on the Properties of SF/P(LLA-CL) Nanofibrous Scaffolds
p.2221

A Stretched Carbon Nanotube with a High-Density of Topological Defect
p.2225

Effect of PH-Shifting Treatment on the Biochemical and Thermal Properties of Myofibril Protein
p.2231

Application of Soluble Membrane Filter in Simultaneous Determination of Trace Levels of Cadmium, Copper, Lead and Zinc in Food Additives by Inductively Coupled Plasma Atomic Emission Spectrometry
p.2236

Crystal Structure of Acontine-4, 8, 9-Triol-19-Ethyl-1, 14, 16-Trimethoxy-4 -[2-(acetylamino)benzoate] Adulterated Copper Chloride C₃₂H₄₅N₂O₈C_L2Cu
p.2242

Research on Synthesis Processing of Microcapsule Wall Material with Emulsion Crosslinking Method
p.2246

Study on Flavonoids from the Peony Leaves by Ultrasonic Extraction
p.2250

Application of Gelatin-Based Antimicrobial Edible Coatings on the Preservation of Chicken Meat and Prepared Products
p.2255

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 236-238Application of Soluble Membrane Filter in...

Application of Soluble Membrane Filter in Simultaneous Determination of Trace Levels of Cadmium, Copper, Lead and Zinc in Food Additives by Inductively Coupled Plasma Atomic Emission Spectrometry

Abstract:

A method for simultaneous determination of trace levels of Cd(II), Cu(II), Pb(II) and Zn(II) in food additives by inductively coupled plasma atomic emission spectrometry ( ICP–AES ) after soluble membrane filter pre-concentration was developed. Based on collection of the chelates of metal ions(II) with 2-(5-bromo-2-pyridylazo)-5- diethylaminophenol ( 5-Br-PADAP ) on soluble membrane filter, the analyte ions were pre-concentrated and separated from sample matrix solutions. Multi-channel membrane filter device and soluble mixed cellulose ester membrane were selected. Analytical parameters such as pH, amount of 5-Br-PADAP, sample volume, etc. were optimized. Under the matrix of Na⁺, K⁺ and Mg²⁺, the limits of detection were 0.02 – 0.03, 0.14 – 0.23, 0.31 – 0.53, 0.10 – 0.15 μg L^-1 for Cd(II), Cu(II), Pb(II) and Zn(II) respectively. The developed method was successfully applied to sodium benzoate, potassium sorbate and basic magnesium carbonate with spiked recoveries of 94% – 115%. Some sample analysis results were checked by inductively coupled plasma mass spectrometry ( ICP–MS ) directly.