Full
Outline
To investigate the residual status of dithiocarbamate (DTCs) pesticides in market available vegetables in Hulunbuir in 2024.
In 2024, a total of 144 vegetable samples from 6 kinds of categories, including leafy, root vegetables, fresh legumes were collected from commercial retail chain in Hulunbuir City. The content of DTCs pesticide residues (calculated as CS2) were determined using solvent absorption gas chromatography-mass spectrometry (GC-MS). Statistical analysis was performed using Excel 2016 and SPSS 20.0 software.
The overall detection rate of DTCs pesticides was 59.03% (85/144), with residue levels ranging from 0.01 to 2.50 mg/kg (calculated as CS2). Among the vegetable categories, both cabbage vegetables and bulb vegetables exhibited detection rates exceeding 80%, while leafy vegetables showed the highest residue level (2.50 mg/kg). The detection rates in Arong Banner and the main agricultural production areas were significantly higher than in other regions (χ2=33.329, P<0.05; χ2=12.491, P<0.05). In contrast, no statistically significant differences in detection rates were observed between samples from supermarkets and farmers’ markets, or between locally produced and non-local samples.
The detection of DTCs pesticide in commercially available vegetables in Hulunbuir is relatively common. It is recommended to promote scientific pesticide application techniques tailored to regional characteristics, strengthen pesticide residue monitoring, and further refine standard revisions. This study provides a scientific basis for risk assessment.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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