Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate
BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) are a series of carcinogenic, mutagenic and teratogenic hydrocarbons with high octanol-water partition coefficients, which are easily adsorbed by soil particles and affect the environment and human health. Sodium persulfate (Na2S2O8) oxidation metho...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2022-05-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202110130148 |
| _version_ | 1797954015905972224 |
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| author | YANG Qing |
| author_facet | YANG Qing |
| author_sort | YANG Qing |
| collection | DOAJ |
| description | BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) are a series of carcinogenic, mutagenic and teratogenic hydrocarbons with high octanol-water partition coefficients, which are easily adsorbed by soil particles and affect the environment and human health. Sodium persulfate (Na2S2O8) oxidation method to remediate PAHs in organic contaminated soil is a more commonly used method in recent years both domestically and internationally. However, at the present stage, the urgent problem to be solved in measuring the content of PAHs in the remediation soil and evaluating the effect of soil remediation is that if sodium persulfate remains in the soil, the oxidation reaction of PAHs may be further accelerated due to the high extraction temperature in the sample pretreatment process. OBJECTIVES To develop an accurate method to determine PAHs in soil after remediation. METHODS The effects of no reductant and pre-added reductant-Soxhlet extraction on the recoveries of 16 polycyclic aromatic hydrocarbons and 6 substitutes in soil after remediation were investigated using gas chromatography-mass spectrometry (GC-MS). RESULTS The results showed that the method of pre-added reductant (Vitamin C) was better than no reductant. The PAHs recoveries of pre-added reductant and no reductant were 76.2%-110.0% and 6.0%-72.4%, respectively. CONCLUSIONS The comparative analysis showed that adding reducing agent before sample extraction could effectively eliminate the influence of residual sodium persulfate and improve the accuracy of PAHs determination results in soil after remediation. This study provides a new method for the accurate determination of PAHs in soil after remediation. |
| first_indexed | 2024-04-10T23:12:12Z |
| format | Article |
| id | doaj.art-5ebe96ef02b3415c8e5a111b7d150932 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:12:12Z |
| publishDate | 2022-05-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-5ebe96ef02b3415c8e5a111b7d1509322023-01-13T05:18:57ZengScience Press, PR ChinaYankuang ceshi0254-53572022-05-0141340441110.15898/j.cnki.11-2131/td.202110130148yk202110130148Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium PersulfateYANG Qing0Shanghai Geotechnical Engineering Detecting Center Co., Ltd; Shanghai Geological Engineering Exploration (Group) Co., Ltd, Shanghai 201900, ChinaBACKGROUND Polycyclic aromatic hydrocarbons (PAHs) are a series of carcinogenic, mutagenic and teratogenic hydrocarbons with high octanol-water partition coefficients, which are easily adsorbed by soil particles and affect the environment and human health. Sodium persulfate (Na2S2O8) oxidation method to remediate PAHs in organic contaminated soil is a more commonly used method in recent years both domestically and internationally. However, at the present stage, the urgent problem to be solved in measuring the content of PAHs in the remediation soil and evaluating the effect of soil remediation is that if sodium persulfate remains in the soil, the oxidation reaction of PAHs may be further accelerated due to the high extraction temperature in the sample pretreatment process. OBJECTIVES To develop an accurate method to determine PAHs in soil after remediation. METHODS The effects of no reductant and pre-added reductant-Soxhlet extraction on the recoveries of 16 polycyclic aromatic hydrocarbons and 6 substitutes in soil after remediation were investigated using gas chromatography-mass spectrometry (GC-MS). RESULTS The results showed that the method of pre-added reductant (Vitamin C) was better than no reductant. The PAHs recoveries of pre-added reductant and no reductant were 76.2%-110.0% and 6.0%-72.4%, respectively. CONCLUSIONS The comparative analysis showed that adding reducing agent before sample extraction could effectively eliminate the influence of residual sodium persulfate and improve the accuracy of PAHs determination results in soil after remediation. This study provides a new method for the accurate determination of PAHs in soil after remediation.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202110130148polycyclic aromatic hydrocarbonssodium persulfatecontaminated soilchemical oxidation remediationvitamin csoxhlet extractiongas chromatography-mass spectrometry |
| spellingShingle | YANG Qing Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate Yankuang ceshi polycyclic aromatic hydrocarbons sodium persulfate contaminated soil chemical oxidation remediation vitamin c soxhlet extraction gas chromatography-mass spectrometry |
| title | Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate |
| title_full | Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate |
| title_fullStr | Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate |
| title_full_unstemmed | Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate |
| title_short | Accurate Determination of Polycyclic Aromatic Hydrocarbons in Soil Remedied with Sodium Persulfate |
| title_sort | accurate determination of polycyclic aromatic hydrocarbons in soil remedied with sodium persulfate |
| topic | polycyclic aromatic hydrocarbons sodium persulfate contaminated soil chemical oxidation remediation vitamin c soxhlet extraction gas chromatography-mass spectrometry |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202110130148 |
| work_keys_str_mv | AT yangqing accuratedeterminationofpolycyclicaromatichydrocarbonsinsoilremediedwithsodiumpersulfate |