Spectrometric Determination of Heavy Metals Present in Mango Fruit of Nepali Origin

Quantitative determination of heavy metals; Fe, Zn, Co, Pb and Ni in Mango fruit of Nepali origin, locally sourced was carried out. Fifteen Mango samples were collected by random sampling method, converted into analyte sample by standard method and analyzed by using Atomic absorption spectrometric method. The amount of heavy metals Fe, Zn, Co and Ni present in sample was, 0.570±0.48, 0.510±0.031, 0.431±0.021, 0.106±0.003 mg/kg respectively. The results indicated the concentration of Zn & Co were higher (WHO 0.320 & 0.05), and the concentration of Nickel (Ni) was below the maximum permissible limit issued by WHO. The concentration of the Lead (Pb) was found below the detection limit of the instrument used.

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Dry Ashing, Hydride Generation Atomic Absorption Spectrometric Determination of Arsenic and Selenium in Foods

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/65.3.647 ◽

1982 ◽

Vol 65 (3) ◽

pp. 647-650 ◽

Cited By ~ 1

Author(s):

Gerard K H Tam ◽

Gladys Lacroix

Keyword(s):

Detection Limit ◽

Atomic Absorption ◽

Reference Materials ◽

Hydride Generation ◽

Spectrometric Method ◽

Flameless Atomic Absorption ◽

Dry Ashing ◽

Atomic Absorption Spectrometric ◽

Certified Values

Abstract A dry ashing, flameless atomic absorption spectrometric method was evaluated to determine arsenic and selenium in foods. Samples were dry-ashed with Mg(N03)2-MgO and dissolved in HC1. Selenate was reduced to selenite by boiling in 4N HC1, and arsenate to arsenite by treatment with KI. Hydrides of arsenic and selenium were generated by the addition of NaBH4 and were swept by nitrogen and hydrogen into a thermally heated silicate tube furnace. The detection limit was about 5 ppb for each element based on a 10 g sample. Analytical results obtained for several samples of NBS reference materials agreed with the certified values. The procedure was evaluated by another laboratory and results were satisfactory.

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An atomic absorption spectrometric method for the determination of phosphorus in foodstuffs using the bismuth phosphomolybdate complex

Journal of the Serbian Chemical Society ◽

10.2298/jsc0006331m ◽

2000 ◽

Vol 65 (5-6) ◽

pp. 331-338

Author(s):

Randjel Mihajlovic ◽

Vesna Kaljevic ◽

Radmila Dzudovic ◽

Zorka Stanic ◽

Ljiljana Mihajlovic

Keyword(s):

Detection Limit ◽

Atomic Absorption ◽

Acid Medium ◽

Resonance Line ◽

Spectrometric Method ◽

Aas Method ◽

Atomic Absorption Spectrometric

A new indirect AAS method using the bismuth phosphomolybdate complex for the determination of phosphorus in foodstuffs is suggested. The bismuth phosphomolybdate complex in acid medium was extacted with isobutyl methylketone and the phosphorus was determined through bismuth in an air/acetylene flame by utilising the 223.06 nm resonance line of bismuth. The interference caused by antimony and titanium can be neglected in the presence of excess of bismuth. The detection limit of the method is 0.008 mg/mL of phosphorus.

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