Source tracing of n-alkanes in Songhua Lake, based on correspondence analysis and geochemical index

Yin, Yechang; Hao, Libo; Gu, Xue; Lu, Jilong; Pan, Zhiheng

doi:10.1007/s10653-019-00421-4

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…OCPs in the sediment samples were pretreated according to the method described in the previous studies [11]. In brief, each sample was ground with the agate mortar, sieved through a 100-mesh sieve after freeze-drying, and weighted 30 g samples with 30 mL extractant of dichloromethane/methanol (93:7, v/v) into the Erlenmeyer flasks.…”

Section: Sample Pretreatmentmentioning

confidence: 99%

“…2. Map of Songhua Lake in Jilin Province showing the sampling site of the sediment core (modified after reference [11]). compounds were identified based on their GC retention times and mass spectra.…”

Section: Analysis Determination and Quality Controlmentioning

confidence: 99%

“…Some previous studies on Songhua Lake mainly focused on the zooplankton community structure and water quality evaluation, including the occurrence and distribution of nutrients and toxic metals [9]. Yin et al (2020) analyzed the sedimentary evolution history of n-alkanes in Songhua Lake sediments and draw a high concentration of n-alkanes, needing to be taken seriously and protected [11]. However, to the best of our knowledge, the study on the persistent organochlorine contaminants sedimentary evolution history in Songhua Lake is scarce.…”

Section: Introductionmentioning

confidence: 99%

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Historical Records and Source Apportionment of Organochlorine Pesticides (OCPs) in a Sediment Core from Songhua Lake, Northeast China

Zhao¹,

Li²,

Lu³

et al. 2022

Pol. J. Environ. Stud.

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Organochlorine pesticides (OCPs) were quantified in a sediment core from Songhua Lake, a large artificial lake in Northeast China, to investigate their historical deposition behaviors and reconstruct their use history. The total OCPs concentrations ranged from 17.74 to 411.86 ng/g. Dichlorodiphenyltrichloroethane (DDTs) and hexachlorocyclohexanes (HCHs) were recorded as the dominant components. Historically, OCPs contaminations input were significant during the 1950s with also certainly deposition input in the mid-1960s and 1990s corresponding with historically intense anthropogenic activities with the development of industry and agriculture in the watershed. DDTs records showed that the deposition environment in Songhua Lake was inclined to the aerobic environment before the 1960s and after the mid-1980s. Principal component analysis (PCA) combined with the diagnostic ratios of OCPs and their metabolites indicated DDTs contamination was due to the input of industrial DDT, and HCHs pollution was from the mixture input of industrial HCHs and lindane source. The data analysis from sediment quality guidelines (SQGs) indicated that the ecological risk can be induced by the presence of DDTs, Lindane, and Dieldrin, which posed an adverse toxic ecological threat to benthic and aquatic organisms of relative regions and need to be taken seriously and managed.

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Section: Sample Pretreatmentmentioning

confidence: 99%

Section: Analysis Determination and Quality Controlmentioning

confidence: 99%