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Lauric Acid-Modified Nitraria Seed Meal Composite as Green Carrier Material for Pesticide Controlled Release.
Journal of Chemistry
Short Title: Journal of Chemistry
Format: Journal Article
Publication Year: 2019
Pages: 1 - 12
Sources ID: 93811
Notes: Accession Number: 134444247; Bai, Bo 1,2,3,4 Xu, Xiaohui 2 Hai, Jingjie 2 Hu, Na 3,4 Wang, Honglun 3,4 Suo, Yourui 3,4; Affiliation:  1: Shaanxi Key Laboratory of Land Consolidation, Xi'an 710054, China  2: Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an 710054, China  3: Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810016, China  4: Qinghai Provincial Key Laboratory of Tibetan Medicine Research, Xining 810016, China; Source Info: 2/3/2019, p1; Subject Term: PESTICIDE pollution; Subject Term: LAURIC acid; Subject Term: PESTICIDES; Subject Term: AGRICULTURAL chemicals; Subject Term: INFRARED spectroscopy; NAICS/Industry Codes: 418390 Agricultural chemical and other farm supplies merchant wholesalers; NAICS/Industry Codes: 325320 Pesticide and Other Agricultural Chemical Manufacturing; NAICS/Industry Codes: 424910 Farm Supplies Merchant Wholesalers; NAICS/Industry Codes: 325190 Other basic organic chemical manufacturing; NAICS/Industry Codes: 325199 All Other Basic Organic Chemical Manufacturing; Number of Pages: 12p; Document Type: Article; Full Text Word Count: 7293
Visibility: Public (group default)
Abstract: (Show)
To alleviate the adverse effects of pesticide residues on the environment, development of a more safe, economical, and reliable usage approach of pesticides is critically urgent. In the present study, a novel pesticide carrier LA-NSM (lauric acid-modified Nitraria seed meal) with controlled release property was prepared through grafting esterification of lauric acid onto Nitraria seed meal substrates. The structure of the obtained samples was characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, and contact angle measurements. The results indicated that LA-NSM products had a well-defined hydrophobic surface and irregular holes for efficient loading of pesticide molecules. Deltamethrin (DEL), a representative insoluble pyrethroid insecticide in water, was deliberately selected as the index pesticide to evaluate the loading and releasing efficiency of LA-NSM. The loading capacity of LA-NSM for DEL can reach about 1068 mg/g. pH, humidity of soil, and temperature had a significant influence on controlled release performance of LA-NSM@DEL. Moreover, the releasing kinetics of LA-NSM@DEL composites could be fitted well with the Higuchi model. Overall, the highly hydrophobic property, excellent loading, and controlled release ability of LA-NSM made it a promising candidate in agricultural applications. [ABSTRACT FROM AUTHOR]