Effect of low-molecular-weight organic acids on the adsorption of norfloxacin in typical variable charge soils of China

Dong, Yuanhua

doi:10.1016/j.jhazmat.2007.11.046

Cited by 99 publications

(35 citation statements)

References 21 publications

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“…Furthermore, the persistence of a fluoroquinolone in sediment depends mostly on its photostability, its binding and absorption capability, its rate of degradation and the ability of leaching into waterborne (Picó and Andreu 2007). The absorption of FQs in soils and sediments is a very complex mechanism, which involves several factors such as organic acids (Zhang and Dong 2008), pH, humic acid, metal iron (Tolls 2001;Turel 2002) and minerals, etc. (Zhang and Huang 2007).…”

Section: Fqs In Water and Sediment Samplesmentioning

confidence: 99%

“…Among them, norfloxacin (NOR), ciprofloxacin (CIP) and ofloxacin (OFL) account for approximately 98% of the total production of FQs. For example, the yield of NOR is about 3,500 tons per year (Zhang and Dong 2008). The Pearl River Delta (PRD), connecting with the Pearl River Estuary (PRE) and South China Sea (SCS), is one of the most developed aquaculture regions in South China, from which much of the freshwater and marine fish supply originate.…”

Section: Introductionmentioning

confidence: 99%

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Residues of fluoroquinolones in marine aquaculture environment of the Pearl River Delta, South China

Wang

Nie

et al. 2011

Environ Geochem Health

118

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Concentrations and distributions of selected fluoroquinolones (norfloxacin, ciprofloxacin and enrofloxacin) in water, sediments and nine kinds of fish species collected from 6 sites in two marine aquaculture regions of the Pearl River Delta, China, were analyzed by using high-performance liquid chromatography with fluorescence detector (HPLC). The results showed that the concentrations of ciprofloxacin and enrofloxacin were below the limits of quantification (LOQ) in all water samples except for norfloxacin. Norfloxacin and ciprofloxacin concentrations ranged from 1.88 to 11.20 ng g(-1) dry wt, 0.76-2.42 ng g(-1) dry wt in sediments collected from the Dapeng'ao region (sites 1-3) and ranged from 2.31 to 4.75 ng g(-1) dry wt, 1.26-1.76 ng g(-1) dry wt in sediments collected from the Hailing Island region (sites 4-6), respectively. However, no enrofloxacin was found in all sediment samples. The three fluoroquinolones (FQs) were detected in all fish samples, and the concentrations were higher in liver tissues than those in muscle tissues. The levels of norfloxacin were higher than ciprofloxacin and enrofloxacin in both liver and muscle tissues. Among the nine marine fish species, Siganus fuscescens from Hailing Island had a significantly high level of norfloxacin in liver tissue (254.58 ng g(-1) wet wt), followed by Sparus macrocephalus (133.15 ng g(-1) wet wt) from Dapeng'ao, and the lowest value was Lutianus argentimaculatus (5.18 ng g(-1) wet wt) from Hailing Island. The obtained results of FQs in present study do not represent a risk to the human health in Guangdong coastal area, based on the maximum residue limits (MRLs) established by Chinese Government and the acceptable daily intake (ADI) recommended by the Food and Agriculture Organization and World Health Organization (FAO/WHO).

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Section: Fqs In Water and Sediment Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Residues of fluoroquinolones in marine aquaculture environment of the Pearl River Delta, South China

Wang

Nie

et al. 2011

Environ Geochem Health

118

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“…na solução do solo. Isso deveu-se, primariamente, à dissolução e à complexação do Al (Al 3+ ) por esses ácidos orgânicos, o qual competiu pelos sítios de troca catiônica ativos do solo, resultando em menor sorção do antibiótico (Zhang & Dong, 2008).…”

Section: Comportamento E Dinâmica De Antibióticos No Ambienteunclassified

Comportamento e impacto ambiental de antibióticos usados na produção animal brasileira

Regitano

Leal

2010

Rev. Bras. Ciênc. Solo

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RESUMOAntibióticos têm sido utilizados em grandes quantidades nas criações animais. Muitas dessas moléculas não são totalmente metabolizadas no organismo animal e seus resíduos têm sido detectados em amostras de solo, água superficial e subterrânea. A ocorrência desses resíduos no ambiente pode favorecer a resistência de microrganismos aos agentes antibióticos, além de causar problemas de ordem toxicológica a determinados organismos vivos. Os antibióticos de uso veterinário são, no geral, representados por moléculas anfóteras, com vários grupos funcionais ionizáveis (diferentes valores de pK a ), massas molares bastante variáveis (172 a 916 g mol -1 ) e baixos potenciais de volatilização (pressão de vapor < 1,1 x 10 -11 mm Hg). Em relação aos pesticidas, esses compostos apresentam maiores valores de solubilidade em água e menores valores de coeficiente de partição n-octanolágua (log K ow ), provavelmente devido à presença de muitos grupos funcionais ionizáveis, o que sugere menor potencial de bioacumulação e maior mobilidade no solo. No presente trabalho avaliam-se o uso de antibióticos e a importância da produção animal no Brasil, aspectos do seu comportamento ambiental em condições de clima temperado e, por fim, enfatiza-se a necessidade de conduzir investigações sobre sua ocorrência e comportamento em solos muito intemperizados, predominantes nos ambientes tropicais.Termos de indexação: agentes antimicrobianos, fármacos, sorção, transformação, transporte, solos tropicais.(1) Recebido para publicação em julho de 2009 e aprovado em fevereiro de 2010.

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“…Heavy metals are receiving increasing attention due to their toxicological importance in ecosystems (Huang et al 2011). Heavy metals can be brought into and accumulate in soil through agricultural sewage sludge, fertilizers, industrial wastes and land disposal of metal-contaminated municipal (Zhang and Dong 2008). The co-contamination of heavy metals and organic contaminations in water, air and soil has become major environmental and human health threat, due to rapid industrialization and urbanization (Pérez et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Effects of key components of S. triqueter root exudates on fractions and bioavailability of pyrene–lead co-contaminated soils

Hou

Liu

Zhang

et al. 2016

Int. J. Environ. Sci. Technol.

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The key components of S. triqueter root exudates involved 4-oxo-pentanoic acid, succinic acid, glutaric acid, phthalate acid, citric acid, vanillic acid, myristic acid, pentadecanoic acid, decanoic acid, 14-methyl-pentadecanoic acid, hexadecanoic acid, octadecanoic acid and oleic acid, and the content of the water-soluble organic acids (citric acid, succinic acid and glutaric acid) significantly increased in pyrene and lead co-contaminated rhizosphere soil. These three water-soluble organic acids including citric acid, succinic acid and glutaric acid were detected as the specific root exudates of S. triqueter under stress of pollutants for pyrene and lead, so they were chosen as the research objects, and they were added into the bioremediation systems of pyrene and lead co-contaminated wetland soils. Compared with the control, the treatments added the three organic acids always improved the quantity of the bioavailable fraction of pyrene and lead in wetland soils and greatly influenced other chemical states of pyrene and lead fractions in the test concentration range. Under the 50 g kg -1 of organic acids concentration, the amount of the bioavailable fraction of pyrene and lead increased 41.0 and 872.7 % by citric acid, respectively. The enhancement of bioavailability of pyrene and lead in the wetland soil by adding organic acids generally decreased in the following order: citric acid [ succinic acid [ glutaric acid. Enhancing effects of organic acids on the bioavailability improvement of pyrene and lead is remarkable.

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Effect of low-molecular-weight organic acids on the adsorption of norfloxacin in typical variable charge soils of China

Cited by 99 publications

References 21 publications

Residues of fluoroquinolones in marine aquaculture environment of the Pearl River Delta, South China

Residues of fluoroquinolones in marine aquaculture environment of the Pearl River Delta, South China

Comportamento e impacto ambiental de antibióticos usados na produção animal brasileira

Effects of key components of S. triqueter root exudates on fractions and bioavailability of pyrene–lead co-contaminated soils

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