Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Pei Xiu,Bai Jinchuan,Li Yaming,Kong Xiangbo
In this paper, a luminescent metal-organic framework Tb 3+ @tartaric acid-functionalized Zr-MOF (Tb 3+ @UiO-67-bpy-TA, TA = tartaric acid) was prepared by post-synthetic modification (PSM) and used as a fluorescence sensor for the detection of the pesticide nitenpyram (NTP). The fluorescence sensing experiment verified that Tb 3+ @UiO-67-bpy-TA had exceptional sensitivity and selectivity for NTP detection, and the detection limit was calculated to be as low as 1.28 µM. The mechanism studies indicated that competitive UV absorption, photoinduced electron transfer (PET) and dynamic quenching contributed to the fluorescence quenching process. In addition, the detection of NTP in tap water and Yellow River water samples by the Tb 3+ @UiO-67-bpy-TA were also investigated using standard addition method, and satisfactory recoveries were achieved.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 5
·2169-2177
·
IF 3.269
Min Zhang,Hua Zhang,Xingchen Zhai,Xin Yang,Haitian Zhao,Jing Wang,Aijun Dong,Zhenyu Wang
A sensitive, simple and cost-effective method for large-scale monitoring of nitenpyram (NIT) is important in food quality control. This study presents a new approach for the rapid detection of NIT using a glassy carbon electrode modified by β-cyclodextrin–reduced graphene oxide nanosheets, which exhibits a considerable improvement of the reduction peak current of NIT. After incubation at 0 °C for 8 min, the resulting electrochemical platform presented high sensitivity with a wide linear range from 5 × 10−7 M to 2.2 × 10−5 M as well as a low detection limit of 1.1 × 10−7 M by linear sweep voltammetry. In addition, water-extraction followed by liquid–liquid extraction pretreatment has been developed to improve the extraction rate and efficiently eliminate the interferent. This method has been applied for the determination of spiked NIT in three kinds of rice samples with the detection limit of 0.3 mg kg−1. The recovery was 74.56–107.15% and the results were validated through HPLC.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Insects
·
2020
·Vol. 11
·期 5
·280
·
IF 2.22
Zhao Li,Tingwei Cai,Yao Qin,Yunhua Zhang,Ruoheng Jin,Kaikai Mao,Xun Liao,Hu Wan,Jianhong Li
The ATP-binding cassette (ABC) transporter superfamily is one of the largest groups of proteins and plays a non-negligible role in phase III of the detoxification process, which is highly involved in the response of insects to environmental stress (plant secondary metabolites and insecticides). In the present study, inNilaparvata lugens, we identified 32 ABC transporters, which are grouped into eight subfamilies (ABCA–H) based on phylogenetic analysis. The temporal and spatial expression profiles suggested that the nymphal stages (1st–5th) and adult males showed similarity, which was different from eggs and adult females, andNlABCA1,NlABCA2,NlABCB6,NlABCD2,NlABCG4,NlABCG12,NlABCG15, andNlABCH1were highly expressed in the midgut and Malpighian tubules. In addition,ABCG12, which belongs to the ABC transporter G subfamily, was significantly upregulated after exposure to sulfoxaflor, nitenpyram, clothianidin, etofenprox, chlorpyrifos, and isoprocarb. Moreover, verapamil significantly increased the sensitivity ofN. lugensto nitenpyram, clothianidin, etofenprox, chlorpyrifos, and isoprocarb. These results provide a basis for further research on ABC transporters involved in detoxification inN. lugens, and for a more comprehensive understanding of the response ofN. lugensto environmental stress.Keywords:ABC transporters;detoxification;Nilaparvata lugens;insecticides
研究领域:
昆虫学
·
分子生物学
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）