Mercury in some chemical fertilizers and the effect of calcium superphosphate on mercury uptake by corn seedlings (Zea mays L.)

Zhao, Xiulan; Wang, Dingyong

doi:10.1016/s1001-0742(09)60236-9

Cited by 39 publications

(13 citation statements)

References 18 publications

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“…Chemical analysis and quality control of fertilizers result in improved agricultural production [4], and methods have been developed. In this context, the determination of minerals in fertilizers becomes necessary, and for this purpose, several techniques have been reported in the literature [1,2,5]. Some techniques for the determination of heavy metals are based on Graphite Furnace atomic absorption spectroscopy (GF-AAS), Continuous Source Flame Absorption Spectroscopy (HR-CS-FAAS) [1,[6][7][8][9], or Cold Vapor Atomic Absorption Spectroscopy (CV-AAS) for Hg [5].…”

Section: Introductionmentioning

confidence: 99%

“…In this context, the determination of minerals in fertilizers becomes necessary, and for this purpose, several techniques have been reported in the literature [1,2,5]. Some techniques for the determination of heavy metals are based on Graphite Furnace atomic absorption spectroscopy (GF-AAS), Continuous Source Flame Absorption Spectroscopy (HR-CS-FAAS) [1,[6][7][8][9], or Cold Vapor Atomic Absorption Spectroscopy (CV-AAS) for Hg [5]. In addition, methods have been developed to determine nutrients in fertilizers by LIBS [10,11], or by total X-ray fluorescence (TXRF) techniques [12].…”

Section: Introductionmentioning

confidence: 99%

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Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Viso

Zachariadis

2018

Separations

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Simultaneous determination of phosphorus and boron in fertilizers was performed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Three different samples were analyzed, of which two were inorganic and one was of organic composition. Analysis of the samples was performed after heated acidic digestion to completely dissolve them, using two different acid mixtures. A solution of HCl + HNO 3 was used to digest the inorganic fertilizers, and a solution of H 2 SO 4 + HNO 3 for the organic fertilizer. The spectral emission lines used were 213.617 nm and 214.917 nm for P and 249.772 nm, 249.677 nm and 208.957 nm for B. The detection and quantification limits for P were between 10-20 mg/kg and 40-80 mg/kg respectively, while for B they ranged between 10-30 mg/kg and 40-100 mg/kg respectively. The repeatability of the technique was found to be within the range 0.9-17.0% for P and 1.7-23.4% for B, expressed as relative standard deviation (RSD). The concentrations found by the proposed method are in good agreement with those reported on their package labels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Viso

Zachariadis

2018

Separations

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“…The values determined on experimental plots (Table 3) in comparison to the control (Ap sample, Table 5) confirm this statement. Mercury in such fertilizers as ammonium bicarbonate, ammonia chloride, potassium chloride or urea is not detected but the concentration of the metal in ammonia sulfate (0.17 mg/kg), ammonium phosphate (0.05 mg/kg), calcium superphosphate (5.1 mg/kg) or NPK comp ound fer tili zers (0.07-1.2 mg/kg) is much higher (Zhao and Wang 2010). In the presented experiment with different doses of nitrogen and potassium fertilizers, a constant (25 kg/ha) dose of calcium superphosphate was applied (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…Literature shows that the mercury content after the long-term application of high dose of P and K fertilizers often increases, particularly in soils which are characterized by a low mercury geochemical background (Zheng et al 2008, Jaguś et al 2013. The mercury content in phosphate fertilizers is 0.01-1.20 mg/kg (Kabata-Pendias and Pendias 2001), and in calcium superphosphate may reach up to 5.1 mg/kg (Zhao and Wang 2010). Moreover, there is a lack of scientific reporting on the effects of nitrogen fertilization in the context of mercury status in soils.…”

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confidence: 99%

Evaluation of the mercury content of loamy sand soil after long-term nitrogen and potassium fertilization

Rutkowska¹,

Murawska²,

Spychaj-Fabisiak³

et al. 2015

PLANT SOIL ENVIRON

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The study was based on soil samples taken after the long-term fertilizer experiment where different doses of nitrogen and potassium were applied. The experiment was located at the Research Station of the UTP University of Science and Technology in Bydgoszcz (Poland). The long-term application of nitrogen and potassium fertilizers leads to changes in the concentration of mercury, soil acidification, reduction in total organic carbon, total nitrogen as well as affluence of available nutrients (P, K, Mg) and increased mobility of copper and zinc. The significant positive correlation between total mercury content in the soil and the content of N-NO 3 , Zn, N-NH 4 and the hydrolytic acidity value were stated.

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“…Research has shown that adsorbents modified with halogens significantly can improve the removal of Hg 0 [5]. Alternative (non-carbon-based) adsorbents have been studied, such as fly ash, calcium-based materials, and zeolites [6][7][8]. In many studies, coal combustion fly ash is selected as adsorbent in mercury removal process because of its lower price.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of elemental mercury adsorption by fly ash modified with ammonium bromide

Zhang

Lin

et al. 2015

J Therm Anal Calorim

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Coal-fired power plants are significant contributors to the anthropogenic emission of mercury. This study focus on evaluated the methods for modification and preparation of fly ash adsorbent which can be applied to adsorb mercury from power plants. Comparing with isometric impregnation and ion exchange method, it was found that the cost and preparation time of the mechanochemical method significantly reduced. Hg 0 adsorption performances of NH 4 Br-modified fly ashes and subsequent effects of mechanical energy on modifying fly ash were investigated, and the results indicated that increasing mechanical force can make the distribution of bromides to be more uniform and increase the number of surface active sites and groups. Furthermore, Hg 0 removal efficiency improved significantly with the increasing bromine loading at 150°C. There is a positive correlation between mechanical energy on modifying fly ash and subsequently Hg 0 adsorption performance. TG/MS analysis was utilized to determine the thermal stability and released material of different samples. Results demonstrated the release of ammonia, which from the modified fly ashes with mechanochemical method, most likely enhances the oxidation and subsequent adsorption of mercury in the 150-200°C temperature range. All results revealed that the mechanochemical application method for adsorbent preparation on site is competitive on economy, practicability, and mercury removal efficiency.

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Mercury in some chemical fertilizers and the effect of calcium superphosphate on mercury uptake by corn seedlings (Zea mays L.)

Cited by 39 publications

References 18 publications

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Evaluation of the mercury content of loamy sand soil after long-term nitrogen and potassium fertilization

Evaluation of elemental mercury adsorption by fly ash modified with ammonium bromide

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