scholarly journals Spatial Variability of Heavy Metals in Soils and Sediments of “La Zacatecana” Lagoon, Mexico

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Sergio A. Covarrubias ◽  
Juan Armando Flores de la Torre ◽  
María Maldonado Vega ◽  
Francisco Javier Avelar González ◽  
Juan José Peña Cabriales
Keyword(s):  
Heavy Metal ◽  
Mine Tailings ◽  
Metal Content ◽  
Agricultural Soils ◽  
Anthropogenic Activities ◽  
Affected Area ◽  
The North ◽  
Soils And Sediments ◽  
Mn Oxides ◽  
Heavy Metals In Soils

Anthropogenic activities have greatly increased heavy metal pollution worldwide. Due to inadequate waste management, mining is one of the chief causes. One particularly affected area in Mexico is the “La Zacatecana” Lagoon, in the municipality of Guadalupe, Zacatecas. From colonial times until the mid-nineteenth century, about 20 million tons of mine tailings were deposited at this site. Here, we catalogue the heavy metal content and their distribution in soils and sediments of La Zacatecana. The mobility of lead in soils was also assayed by sequential extraction. Concentrations of the different metals analysed were as follows: Pb > Cr > As > Ni > Hg > Cd. Site VIII accumulated the highest amount of Pb (3070 mg·kg−1) sevenfold more than the limit established by the Mexican standards for agricultural soils (i.e., 400 mg·kg−1). On the other hand, the contents of Cd, Cr, and Ni were within the levels accepted by the above normativity, set at 37, 280, and 1600 mg·kg−1, respectively. Concentrations of Hg and Pb were highest in the north-northwest zone of the lagoon and decreased towards the southeast. Except for Site VIII where 30% of the Pb was in an interchangeable form or bound to carbonates, most Pb in La Zacatecana soils was present in an unavailable form, associated with Fe-Mn oxides.

Heavy Metal Content of Agricultural Soils at Tumu, Akko Local Government Area of Gombe State, Nigeria

2019 ◽  
Vol 9 (2) ◽  
pp. p8693
Author(s):  
Ogidi A. Ogidi ◽  
Danja B. A. ◽  
Sanusi K. A. ◽  
Nathaniel Sunday Samuel ◽  
Abdurrahman Abubakar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Local Government ◽  
Metal Content ◽  
Agricultural Soils ◽  
Local Government Area ◽  
Heavy Metal Content

Correlation between radioactivity levels and heavy metal content in the soils of the North Kosovska Mitrovica environment

2013 ◽  
Vol 15 (9) ◽  
pp. 1735 ◽  
Author(s):  
Ljiljana Gulan ◽  
Biljana Milenkovic ◽  
Jelena M. Stajic ◽  
Biljana Vuckovic ◽  
Dragana Krstic ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
The North ◽  
Radioactivity Levels

scholarly journals Heavy Metal (Pb, Hg) Extent in Mud Crab (Scylla serrata) in Cengkok Coastal Waters, Banten Bay, Indonesia

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 108
Author(s):  
Ertika Noviani ◽  
Sulistiono Sulistiono ◽  
Agustinus Mangaratua Samosir
Keyword(s):  
Heavy Metal ◽  
Coastal Waters ◽  
Anthropogenic Activities ◽  
Rapid Development ◽  
Quality Standard ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Heavy Metal Concentrations ◽  
The North ◽  
Crab Meat

  Banten Bay is located in the north of Java Island and influenced by anthropogenic activities around the bay. Increasing population growth and rapid development of industrial and urban activities around the waters of the Banten Bay can lead to an increased input of pollutants in the form of heavy metal in the water body. This study aims to analyze the Pb and Hg levels that accumulate in mud crab (Scylla serrata) in Cengkok coastal waters, Banten Province. Samples of the mud crabs were taken in the waters for six months, from March to August 2019. Analysis of heavy metal concentrations was carried out using the Atomic Absorption Spectrophotometric (AAS) AA 7000 series Shimadzu. Heavy metal (Pb and Hg) in the mud crab in Banten Bay were below the specified quality standard. The bio-concentration factor of the mud crab was low (<100). Results of the calculation of the maximum limit of consumption of the mud crab meat (that accumulates heavy metals in the human body) were 3.5 kg of meat/week for adults and 0.9 kg of meat/week for children.Keywords: Crustacean, pollution, limit of consumption.

scholarly journals KADAR LOGAM BERAT Pb, Cd DAN KELIMPAHAN PERIFITON PADA EKOSISTEM LAMUN DI TELUK JEPARA

2016 ◽  
Vol 5 (3) ◽  
pp. 98-105
Author(s):  
Himatul Aliyah Febriana ◽  
Pujiono Wahyu Purnomo ◽  
Suryanti Suryanti
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Random Sampling ◽  
Metal Content ◽  
Anthropogenic Activities ◽  
Heavy Metal Content ◽  
Dense Medium ◽  
Fishing Activity ◽  
Research Activities ◽  
Seagrass Ecosystem

ABSTRAK Ekosistem padang lamun merupakan ekosistem yang memiliki produktivitas primer yang tinggi, hal tersebut didukung oleh keberadaan perifiton yang melekat pada permukaan daun lamun. Pengaruh tersebut dapat berkurang akibat adanya kegiatan perikanan atau aktivitas antropogenik yang menyebabkan pencemaran kandungan logam berat seperti Pb dan Cd. Tujuan penelitian adalah untuk mengetahui jenis lamun, kelimpahan perifiton dan kandungan logam berat pada daun lamun serta hubungan kelimpahan perifiton dengan kandungan logam berat di Teluk Jepara. Penelitian ini menggunakan metode deskriptif. Penelitian dilaksanakan pada bulan Maret - April 2016 di Teluk Jeparapada lingkungan lamun padat (368 ind/m2), sedang (240 ind/m2), dan jarang (178 ind/m2). Sampling menggunakan metode purposive random sampling dengan menentukan obyek yang diambil sebagai sampel berdasarkan kerapatan lamun. Jenis lamun yang ditemukan di Teluk Jepara adalah Thalassia sp. Rata-rata kelimpahan perifiton pada kerapatan lamun padat, sedang dan jarang adalah 1742 ind/cm2, 1481 ind/cm2, dan 1249 ind/cm2. Perifiton yang ditemukan dari kelas Bacillariophyceae, Cyanophyceae, Euglenophyceae, Rodhophyceae, Dinophyceae dan Chlorophyceae. Hasil logam berat  Pb dan Cd selama tiga kali sampling diperoleh nilai yang sama yaitu Pb <100 mg/gr dan Cd <10 mg/gr Berdasarkan hasil penelitian disimpulkan bahwa adanya kandungan logam berat Pb dan Cd tidak mempengaruhi keberadaan perifiton pada daun lamun di perairan Teluk Jepara. Kata kunci: Lamun; Perifiton; Logam Berat Pb dan Cd; Teluk Jepara ABSTRACT Seagrass ecosystem is one of the ecosystems that has high primary productivity, supported by the presence of periphyton which attached to the seagrass leaf surface. The influence can less result of fishing activity or anthropogenic activities can also cause contamination of heavy metals like a Pb and Cd. The purpose of this research were to determine the type of seagrass, the abundance of perifiton and heavy metal content in the seagrass leaves and relationship periphyton abundance to the heavy metal content in the Gulf of Jepara. This research uses descriptive method. Research activities carried out arround March-April 2016 in the Gulf of Jepara in dense seagrass environment (368 ind/m2), moderate (240 ind/m2), dan rare (178 ind/m2).    Determining location of sampling using purposive random sampling method to determine the object sampled by different densities of the seagrass. Seagrass species found in the Gulf of Jepara is Thalassia sp. The average abundance of periphyton in dense, medium and rare seagrass density are 1742 ind/cm2, 1481 ind/cm2, and 1249 ind/cm2. Periphyton types were found came from class of Bacillariophyceae, Cyanophyceae, Euglenophyceae, Rodhophyceae, Dinophyceae and Chlorophyceae. The result of heavy metals Pb and Cd for three times of the sampling obtained similar content of heavy metals which are Pb <100 mg/gr and Cd <10 mg/gr. Based on the research results concluded that content of Pb and Cd heavy metals is not affect the existence periphyton on leaves of seagrass in the Gulf waters Jepara.  Key Words: Seagrass; Periphyton; Heavy Metal of Pb and Cd; Gulf of Jepara 

scholarly journals Heavy Metal Content in Terraced Rice Fields at Sruwen Tengaran Semarang - Indonesia

2018 ◽  
Vol 31 ◽  
pp. 03009 ◽  
Author(s):  
Yulis Hindarwati ◽  
Tri Retnaningsih Soeprobowati ◽  
Sudarno
Keyword(s):  
Heavy Metal ◽  
Metal Content ◽  
Rice Field ◽  
Agricultural Soils ◽  
Rice Fields ◽  
Heavy Metal Content ◽  
The European Union ◽  
Health Decline ◽  
Periodic Testing ◽  
Standard Set

The presence of heavy metal on agricultural soils can be caused not only natural factors but also due to human intervention. Differences in management and lack of understanding of farmers in the production input of fertilizers and pesticides ensued in land ravaged. Periodic testing of paddy fields is necessary to minimize the contaminants from being absorbed by plants that will have an impact on health decline. The purpose of the assessment was to identify the heavy metal content in the terraced rice field in Sruwen Village, Tengaran District, Semarang Regency. Survey was conducted in February 2017. Sampling on terraced rice fields of different heights consisted of upper, middle, and upper down. Taken as many as eight single points and composed at a depth of 0-20 cm and 20-40 cm. The identification results showed that heavy metal content of Pb, Cd, and Cu were present at all altitudes. Heavy Metals Pb and Cd at a depth of 0-20 cm were higher from 20-40 cm in the upper and lower rice fields but lower in the middle rice field. Cu heavy metal at a depth of 0-20 cm was higher than 20-40 cm in all altitude land. The heavy metal content of Pb, Cd, and Cu was still below the heavy metal standard set by the European Union and India.

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