Direct mercury determination in blood and urine by means of high-resolution continuum source graphite furnace atomic absorption spectrometry using gold nanoparticles as a chemical modifier

2017 ◽  
Vol 32 (12) ◽  
pp. 2352-2359 ◽  
Author(s):  
Maite Aramendía ◽  
Ananda Guarda ◽  
Diego Leite ◽  
Martín Resano
Keyword(s):  
Gold Nanoparticles ◽  
High Resolution ◽  
Au Nanoparticles ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Chemical Modifier ◽  
Mercury Determination ◽  
Blood Samples ◽  
Continuum Source ◽  
Graphite Furnace Atomic Absorption

The use of Au nanoparticles as a chemical modifier permits the direct Hg determination in urine and blood samples by HR CS GFAAS.

Sequence Determination of Cd and Pb in Honey by Incomplete Digestion-High Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry

2014 ◽  
Vol 511-512 ◽  
pp. 22-27 ◽  
Author(s):  
Hui Liu ◽  
Shang Long Chen ◽  
Chao Li ◽  
Tong Xiang Li ◽  
Yong Hua Wu ◽  
...  
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Chemical Modifier ◽  
Sequence Determination ◽  
Continuum Source ◽  
Graphite Furnace Atomic Absorption

A fast and effective method was developed for sequence determination of Cd and Pb in honey by incomplete digestion-high resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). Cd and Pb in some honey samples using incomplete digestion treatment were measured by HR-CS GFAAS. The factors influencing determination were investigated by single factor experimental design. The optimal determination conditions were found as follows: NH4H2PO4(10mg/mL) were added as a chemical modifier with the volume of 5μL; pyrolysis temperature 600°C(Cd) and 800°C(Pb); atomization temperature 1100°C(Cd) and 1400°C(Pb). Detection limits (3σ,n=12) were found to be 0.06 μg/L and 0.78 μg/L for Cd and Pb, respectively. The precisions (RSD) for 6 replicate measurements of Cd and Pb in honeys were 3.8% and 2.6%, respectively. Recoveries of added Cd and Pb were varied from 95% to 103%. Therefore, the proposed method was rapid, accurate and stable with a high practical value. It provided scientific basis for multi-element sequence determination in food.

scholarly journals High-resolution continuum source graphite furnace atomic absorption spectrometry for the monitoring of Au nanoparticles

2016 ◽  
Vol 31 (11) ◽  
pp. 2233-2241 ◽  
Author(s):  
Martín Resano ◽  
Esperanza Garcia-Ruiz ◽  
Raul Garde
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Au Nanoparticles ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Continuum Source ◽  
Graphite Furnace Atomic Absorption ◽  
Average Size

This article demonstrates the potential of HR CS GFAAS for establishing the presence of NPs and their average size.

Determination of Manganese in Leisure Foods by Incomplete Digestion-Microemulsion Sampling-High Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry

2014 ◽  
Vol 1033-1034 ◽  
pp. 643-647
Author(s):  
Jing Zhi Miao ◽  
Shang Long Chen ◽  
Chao Li ◽  
Yong Hua Wu
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Chemical Modifier ◽  
Continuum Source ◽  
Significant Difference ◽  
Graphite Furnace Atomic Absorption

A fast and effective method was developed for determination of Mn in leisure foods by incomplete digestion-microemulsion sampling-high resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). Microemulsions were prepared with digestive liquor and n-butyl alcohol as an auxiliary emulsifier after incomplete digestion treatment. The factors influencing determination were investigated by single factor experimental design. The optimal determination conditions were found as follows: the tartaric acid (1 mg/mL) was added as a chemical modifier with the volume of 4 μL; pyrolysis temperature 1100°C; atomization temperature 2000°C. The results showed that the correlation coefficient was better than 0.996, the characteristic concentration was 0.09 μg/L, the precision (RSD) for 6 replicate measurements of Mn was 2.8% and the average of recoveries was 97.3%. F-test and t-test (95% confidence level) in between the proposed method and the microwave digestion-HR-CS GFAAS method had no significant difference. Therefore, the proposed method was accurate and stable with a high practical value. It provided scientific basis for determination of metal elements in food.

Sign in / Sign up

Export Citation Format

Share Document