Baseline Concentration of Heavy Metals in Brazilian Latosols

Campos, Mari Lucia; Pierangeli, Maria Aparecida Pereira; Guilherme, Luiz Roberto Guimarães; Marques, João José; Curi, Nilton

doi:10.1081/css-120017838

Cited by 50 publications

(32 citation statements)

References 15 publications

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“…Esses Latossolos já foram alvo de outros estudos de adsorção (Guilherme et al, 1998;Pierangeli et al, 2001aPierangeli et al, ,b,c, 2003Pierangeli et al, , 2004Campos et al, 2006), de teores semitotais de Ets (Campos et al, 2003), entre outros. A caracterização física, química e mineralógica desses solos pode ser encontrada em Silva et al (1996) e Silva (1997.…”

Section: Methodsunclassified

Teor e capacidade máxima de adsorção de arsênio em Latossolos brasileiros

Campos

Guilherme

Lopes³

et al. 2007

Rev. Bras. Ciênc. Solo

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SUMMARY: CONTENT AND MAXIMUM CAPACITY OF ARSENIC ADSORPTION IN BRAZILIAN OXISOLSIn view of the toxicity of As for man and animals and the possibility of existence of a great number of contaminated areas it is imperative to know the total As content in soils considered uncontaminated and about As sorption processes in soils of variable charge. The objective of this work was to determine the total content and maximum capacity of As

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Section: Methodsunclassified

Teor e capacidade máxima de adsorção de arsênio em Latossolos brasileiros

Campos

Guilherme

Lopes³

et al. 2007

Rev. Bras. Ciênc. Solo

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“…Soils derived from igneous rocks contain from 0.1 to 0.3 mg kg -1 of Cd; those derived from metamorphic rocks, from 0.1 to 1.0 mg kg -1 of Cd; and in those derived from sedimentary rocks, the content may be up to 10.0 mg kg -1 of Cd (Kabata-Pendias, 2011). Campos et al (2007) found mean values of 0.66 mg kg -1 of Cd in diverses Brazilian Oxisols. The Cd contents permitted for non-contaminated soils, according to Kabata-Pendias (2011), are less than 1.0 mg kg -1 , although in agricultural soils in China (SEPAC, 1995) and the Czech Republic (Komárek et al, 2008), these limits are considered to be around 0.3 and 0.4 mg kg -1 , respectively.…”

Section: Soilmentioning

confidence: 99%

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

Oliveira

Lima

Salviano

et al. 2015

Rev. Bras. Ciênc. Solo

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Soils under natural conditions have heavy metals in variable concentrations and there may be an increase in these elements as a result of the agricultural practices adopted. Transport of heavy metals in soil mainly occurs in forms dissolved in the soil solution or associated with solid particles, water being their main means of transport. In this context, the aim of this study was to evaluate the heavy metal and micronutrient content in the soil and in the grapevine plant and fruit under different irrigation strategies. The experiment was carried out in Petrolina, PE, Brazil. The treatments consisted of three irrigation strategies: full irrigation (FI), regulated deficit irrigation (RDI), and deficit irrigation (DI). During the period of grape maturation, soil samples were collected at the depths of 0-10, 10-20, 20-40, 40-60, and 60-80 cm. In addition, leaves were collected at the time of ripening of the bunches, and berries were collected at harvest. Thus, the heavy metal and micronutrient contents were determined in the soil, leaves, and berries. The heavy metal and micronutrient contents in the soil showed a stochastic pattern in relation to the different irrigation strategies. The different irrigation strategies did not affect the heavy metal and micronutrient contents in the vine leaves, and they were below the contents considered toxic to the plant. In contrast, the greater availability of water in the FI treatment favored a greater Cu content in the grape, which may be a risk to vines, causing instability and turbidity. Thus, adoption of deficit irrigation is recommended so as to avoid compromising the stability of tropical wines of the Brazilian Northeast.

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“…With this in mind, it is important that data from tropical soils is obtained but, first, the extent of existing knowledge and data in this context must be gauged. Many authors have commented on the relative lack of data andyor information on the subject of trace metal behaviour in tropical soils and on the scarcity of studies in this area (Davies, 1997;Kookana and Naidu, 1998;Naidu et al, 1998;Onyatta and Huang, 1999;Mbila et al, 2001;Appel and Ma, 2002;Herpin et al, 2002;Campos et al, 2003;Reeves, 2003;Bertoncini et al, 2004;de Alcantara and de Carmargo, 2004;Udom et al, 2004). A logical first step, and the aim of this paper, is to collate current knowledge and to seek a better understanding about the behaviour of trace metals in tropical soils.…”

Section: Introductionmentioning

confidence: 99%

The mobility and bioavailability of trace metals in tropical soils: a review

Rieuwerts

2007

Chemical Speciation & Bioavailability

134

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In recent years, initiatives on critical loads of metals have resulted in the development of models to predict critical, i.e. mobile or bioavailable, concentrations of potentially toxic elements in soils. These models have been based on data from temperate soils and, considering the fundamentally different soil chemistry of the major tropical soil types, it is unlikely that such models could be applied successfully in the tropics. In particular, the major tropical soil types, particularly oxisols and ultisols, are distinguished from most temperate soils by low activity clays, low organic matter contents, low pH values and high levels of Fe oxides. The aim of this review paper is to collate existing information on the behaviour of trace metals in tropical soils, particularly in relation to metal mobility and bioavailability, and note differences, where these exist, with temperate soils. The main findings are as follows. The acidic nature of many tropical soils may not, of itself, lead to greater metal solubility. The relatively low organic matter content of tropical soils suggests that it cannot be relied upon to retain metals. However, when it is present, it appears to be important in the retention of copper, lead and zinc. The clay fractions of many tropical soils are dominated by kaolinite which is less able than 2 : 1 layer silicate clays to adsorb metals. However, oxisols and ultisols in particular have relatively high Fe oxides contents and these may be effective in metal sorption. Overall though, soils such as oxisols and ultisols appear to sorb relatively low amounts of added metals, most likely explained by the low activity clay minerals they contain and the rapid decomposition of organic matter incorporated into them. Dominant retention mechanisms, where they occur, are inner and outer sphere adsorption but not precipitation. Cadmium, Cu, Zn and Ni appear to be mobile in tropical soils. Chromium may be mobile in the A horizon but retained in the B horizon. The evidence for Pb points to surface retention, as is often observed for this metal in temperate soils. Metals in contaminated tropical soils appear to be rather bioavailable, judging by the few studies on plant uptake. It should be noted that the above statements are based on a relatively small number of studies. Further work is required if we are to gain an improved understanding of the mobility and bioavailability of trace metals in tropical soils.

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Baseline Concentration of Heavy Metals in Brazilian Latosols

Cited by 50 publications

References 15 publications

Teor e capacidade máxima de adsorção de arsênio em Latossolos brasileiros

Teor e capacidade máxima de adsorção de arsênio em Latossolos brasileiros

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

The mobility and bioavailability of trace metals in tropical soils: a review

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