scholarly journals Lead behavior in soil treated with contaminated sewage sludge and cultivated with maize

2003 ◽  
Vol 46 (4) ◽  
pp. 499-505 ◽  
Author(s):  
Marcilene Ferrari Barriquelo ◽  
Marinês Aparecida Juliatti ◽  
Margarete Soares da Silva ◽  
Ervim Lenzi
Keyword(s):  
Sewage Sludge ◽  
Atomic Absorption ◽  
Metal Concentration ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Soil Samples ◽  
Treated Soil ◽  
Lead And Cadmium ◽  
No Absorption

Lead (Pb) behavior was studied in soil treated twice with sewage sludge contaminated with lead at interval of 18 months. Soil samples received five different treatments: three with lead [0 (reference); 2,500; 5,000 mug g-1] and two with a mixture of lead and cadmium (interferer) (2,500 + 2,500 and 5,000 + 5,000 mug g-1, respectively). Vases containing treated soil were cultivated with maize in a greenhouse for 75 days. Pb was extracted using nitric perchloric digestion and analyzed by atomic absorption spectroscopy. The soil, containing sewage sludge contaminated by lead presented a higher concentration of Pb. The metal concentration remained constant in all treatments at 20-60 cm depth. No absorption of Pb by the plants was detected.

scholarly journals Heavy Metal Contamination

2021 ◽  
Author(s):  
Soni Kumari ◽  
Amarnath Mishra
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Metal Contamination ◽  
Industrial Waste ◽  
Inductively Coupled Plasma ◽  
Heavy Metal Contamination ◽  
Inductively Coupled

In the era of industrialization, pollution has totally deteriorated the quality and diversity of life. Heavy metal contaminations are the major causes of environment deteriorations. The basic reasons are natural as well as anthropogenic. Chief sources of heavy metal contamination are air pollution, river sediments, sewage sludge, town waste composts, agricultural chemicals like fertilizers and pesticides, and industrial waste like factories releasing chemicals, anthropogenic activities, etc. Agricultural soils in many parts of the world are generally contaminated by heavy metal toxicity such as Cd, Cu, Zn, Ni, Co, Pb, Hg, As, etc. These are due to the long-term use of phosphate fertilizers, sewage sludge, dust from smelters, industrial waste, etc. Heavy metals in soils are detected with some specific instruments like atomic absorption spectroscopy, inductively coupled plasma, inductively coupled plasma-mass spectroscopy, and X-ray fluorescence and spectroscopy. Among all these instruments, atomic absorption spectroscopy (AAS) is the best because it gives the precise quantitative determination. AAS is a method applied for measuring the quantity of the trace elements present in the soil or any other samples.

Microwave acid dissolution of soil samples for elemental analysis

1990 ◽  
Vol 68 (2) ◽  
pp. 360-362 ◽  
Author(s):  
Byron Kratochvil ◽  
Sipho Mamba
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Soil Analysis ◽  
Soil Samples ◽  
Acid Dissolution ◽  
Flame Atomic Absorption ◽  
Trace Metal Determination ◽  
Microwave Dissolution

Closed vessel microwave acid dissolution is compared with conventional open vessel methods for the determination of trace zinc and copper in a series of soil samples collected from sugarcane fields in Swaziland. Analytical measurements by flame atomic absorption spectroscopy show that alt the zinc and copper in the samples is released within 7 min in a commercial microwave oven at 400 W. Up to seven 500-mg portions can be handled at a time. Attention must be paid to the amount of organic matter present in a soil so that excess pressure build up does not occur during dissolution. Keywords: microwave dissolution, soil analysis, trace metal determination, atomic absorption spectroscopy.

scholarly journals DETERMINATION OF LEAD AND CADMIUM LEVELS IN SELECTED SINGLE-USE PLASTICS IN SOKOTO

2021 ◽  
pp. 21581-21585
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Lead And Cadmium ◽  
Single Use

The estimation of selected heavy metals (Lead and Cd) was carried out using Atomic Absorption Spectroscopy (AAS). Therein, the levels of Lead (Pb) range from 1.0791+0.023ug/kg to 0.07060.+007ug/kg; the ranges of Cadmium (Cd) are 0.0552+0.003ug/kg to 0.0045+0.006ug/kg. The results revealed varying degrees of heavy metals in the selected plastics examined. Pb was highest in Plastic Bottles (PB) and lowest in Straw (S); whereas, Cd was highest in Straw and lowest in Plastic Bottles. KeyWords - Heavy metals, Pb, Cd, plastics, straw, plastic bottles

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