Concentrated hydrochloric acid extraction as predictor of total arsenic in lead arsenate-contaminated orchard soils

2002 ◽  
Vol 33 (1-2) ◽  
pp. 237-242 ◽  
Author(s):  
Frank J. Peryea
Keyword(s):  
Hydrochloric Acid ◽  
Acid Extraction ◽  
Total Arsenic ◽  
Lead Arsenate ◽  
Orchard Soils

Antimony Impurity in Lead Arsenate Insecticide Enhances the Antimony Content of Old Orchard Soils

2003 ◽  
Vol 32 (2) ◽  
pp. 736-738 ◽  
Author(s):  
Sandra E. Wagner ◽  
Frank J. Peryea ◽  
Royston A. Filby
Keyword(s):  
Antimony Content ◽  
Lead Arsenate ◽  
Antimony Impurity ◽  
Orchard Soils

scholarly journals STUDY OF GELATIN FROM DUCK BONE AS AN ALTERNATIVE SOURCES OF HALAL GELATIN

2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Muhammad Habbib Khirzin
Keyword(s):  
Hydrochloric Acid ◽  
Physicochemical Properties ◽  
Protein Content ◽  
Water Content ◽  
Extraction Method ◽  
Extraction Process ◽  
Ash Content ◽  
Acid Extraction ◽  
Alternative Sources

Gelatin is an intermediate ingredient which is oftenly used in many field such as food, pharmacy, and cosmetics. It is usually extracted from pig and cow. Halal issue of gelatin sources and the outbreaks of mad cow diseases encouraged people to find an alternative sources of gelatin. One of the alternative sources of gelatin was duck bone. The aim of this research was to describe physicochemical properties of duck bone gelatin which is extracted by using acid extraction method as an alternative sources of halal gelatin. The extraction of duck bone gelatin used 5% concentration of HCl (hydrochloric acid). The extraction process consisted of four steps, they were degreassing, defating, demineralization, and acid extraction. The result showed that gelatin which was extracted from duck bone had these several characteristic: yield of 6.24%, pH 4.0, water content of 13.43%, ash content of 13.42%, protein content of 65.43%, and whiteness degree of 30.35%. Generally, gelatin which was extracted from duck bone had similar characteristic with commercial gelatin and SNI standard. Further researcher had been suggested to reoptimized extraction method in order to reduce ash content.

The modelling of water and hydrochloric acid extraction by tri-n-butyl phosphate

2012 ◽  
Vol 84 ◽  
pp. 21-30 ◽  
Author(s):  
Kwan H. Lum ◽  
Geoff W. Stevens ◽  
Sandra E. Kentish
Keyword(s):  
Hydrochloric Acid ◽  
Acid Extraction

Relationship of Arsenic and Lead in Soil with Fruit and Leaves of Apple Trees at Selected Orchards in Michigan

2020 ◽  
Vol 83 (6) ◽  
pp. 935-942
Author(s):  
LOAN THI THANH CAO ◽  
LESLIE D. BOURQUIN
Keyword(s):  
Inductively Coupled Plasma ◽  
Arsenic Content ◽  
Total Arsenic ◽  
Tissue Samples ◽  
Inductively Coupled ◽  
Lead Arsenate ◽  
Fruit Samples ◽  
Metal Levels ◽  
Orchard Soil ◽  
Fruit Orchards

ABSTRACT Historically, lead arsenate pesticides were commonly used in fruit orchards. Residues of metals from this historical use can persist in soil for decades, which can result in potential risk for humans if they consume fruits grown on contaminated soil. This research was conducted to assess lead and arsenic levels in apples, leaves, and orchard soil where the apples were grown to determine the relationship between metal levels in fruits and fruit products with those in orchard soil. Soil and tree tissue samples were collected from several Michigan farms, and metal concentrations were quantified by using microwave extraction and inductively coupled plasma mass spectrometry. Soil samples were collected at depths of 0 to 20 cm and 20 to 40 cm at a distance of 1 m from the tree trunk. Fruit samples also were processed into juice and pomace fractions to assess the partitioning of arsenic and lead during juice processing. The lead concentration was significantly higher in topsoil (9.4 μg/kg) compared with subsoil (6.9 μg/kg), but the arsenic content did not differ between the two soil layers (P > 0.05). Lead concentrations in apple leaves were correlated with lead in topsoil (0 to 20 cm; P = 0.03). Concentrations of total arsenic in all juice samples were less than 1 μg/kg and showed less potential than lead for uptake and translocation to fruits. There was no significant relationship between soil arsenic content and total arsenic concentrations in juice, pomace, and leaf samples (P > 0.05). Results of this research indicate that lead and total arsenic concentrations in apples and apple products from these selected orchards in Michigan are unlikely to be impacted by the contamination of these metals in orchard soil. HIGHLIGHTS

Antimony Impurity in Lead Arsenate Insecticide Enhances the Antimony Content of Old Orchard Soils

2003 ◽  
Vol 32 (2) ◽  
pp. 736 ◽  
Author(s):  
Sandra E. Wagner ◽  
Frank J. Peryea ◽  
Royston A. Filby
Keyword(s):  
Antimony Content ◽  
Lead Arsenate ◽  
Antimony Impurity ◽  
Orchard Soils

scholarly journals Determination of Biogenic Amines in Cheese

1997 ◽  
Vol 80 (5) ◽  
pp. 1006-1012 ◽  
Author(s):  
Silvana R Vale ◽  
M Beatriz A Glória
Keyword(s):  
Hydrochloric Acid ◽  
Biogenic Amines ◽  
Reversed Phase ◽  
Fluorometric Detection ◽  
Acid Extraction ◽  
Ion Pair Chromatography ◽  
Liquid Chromatographic ◽  
Postcolumn Derivatization ◽  
Ml Detection

Abstract A liquid chromatographic (LC) procedure for determining 10 biogenic amines in cheese is described. The method is based on ion-pair chromatography on a reversed-phase column with postcolumn derivatization with o-phthaldialdehyde and fluorometric detection. It allowed simultaneous determination of 10 amines in <80 min: histamine, tyramine, tryptamine, 2-phenylethylamine, serotonin, agmatine,spermine, spermidine, putrescine, and cadaverine. Linearity for each amine was observed between 0.5 and 6.0 μg/mL. Detection limits ranged from 0.004 to 0.009 μg/20 μL, and determination limits ranged from 0.066 to 0.149 mg/100 g. Amino acids and other amines did not interfere with determination of biogenic amines. Three extractantsmethanol, hydrochloric acid, and trichloroacetic acidwere compared in their efficiency to recover aminesfrom spiked samples. Purification of the cheese extract was required prior to LC to avoid interference from compounds in the cheese matrix. Hydrochloric acid extraction followed by purification with diethyl ether gave best recoveries for all the amines (75.5-112.3%). The method is simple, fast, and reliable. It can be used to study the technological and toxicological implications of biogenic amines in cheeses.

Extraction of Heavy Metals from the Ash Using Hydrochloric Acid

2013 ◽  
Vol 811 ◽  
pp. 277-279 ◽  
Author(s):  
Guo Xian Ma ◽  
Hai Ying Zhang
Keyword(s):  
Heavy Metals ◽  
Air Pollution ◽  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Pollution Control ◽  
Acid Extraction ◽  
Hydrochloric Acid Concentration ◽  
Air Pollution Control ◽  
Removal Ratio

This study aims to develop a methodology for analysis of extraction of heavy metals from air pollution control (APC) ash using hydrochloric acid. In this work, the ash was firstly characterized and then hydrochloric acid was used to extract Ni, Zn, Pb and Cu out from the ash. In addition, influence of hydrochloric acid concentration on removal ratio of the four heavy metals was studied. It was found that removal ratio followed the decreasing sequence of Pb > Zn > Cd > Cu for acid extraction using hydrochloric acid. The optimal acid concentration was 4 mol/L, which resulted in a removal ratio of 91% for Pb, 84% for Zn, around 53% for Cd and around 41% for Cu.

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