【薄膜包衣缓释复合肥】Xin Jia Zhi-yuan Ma Guo-xiang Zhang Jia-mei Hu Zhi-yong Liu He-yun Wang and Feng Zhou. Polydopamine Film Coated Controlled-Release Multielement Compound Fertilizer Based on Mussel-Inspired Chemistry. J. Agric. Food Chem. 2013 61 (12) pp 2919–2924 DOI: 10.1021-jf3053059
Abstract
This work reports on a facile and reliable method to prepare a polydopamine film coated controlled-release multielement compound fertilizer (PCMCF) based on mussel-inspired chemistry for the first time. The polydopamine (Pdop) film was coated on double copper potassium pyrophosphate trihydrate providing three essential nutrients (Cu K and P) by spontaneous oxidative polymerization of dopamine. The thickness of the polymer coating of the fertilizer was controlled by using the multistep deposition technique. The morphology and composition of the products were characterized by transmission electron microscopy inductively coupled plasma emission spectrometer a vis spectrophotometer and a Kjeltec autoanalyzer. The controlled-release behavior of four elements including nitrogen from Pdop was evaluated in water and in soil (sterilized or not). The results revealed that the coated fertilizers had good slow-release properties incubated in either water or soil. It is noted that the release rate of nutrients of PCMCF can be tailored by the thickness of the Pdop coating and the Pdop coating can be biodegraded in soil. This coating technology will be effective and promising in the research and development of controlled-release fertilizer.
生物质燃烧颗粒中褐色碳吸收与有机质示踪剂Brown carbon absorption linked to organic mass tracers in biomass burning particles. Atmos. Chem. Phys. 13 2415-2422 2013
Abstract
Traditional gas and particle phase chemical markers used to identify the presence of biomass burning (BB) emissions were measured for a large forest fire near Boulder Colorado. Correlation of the organic matter mass spectroscopic m–z 60 with measured particle light absorption properties found no link at 532 nm and a strong correlation at 404 nm. Non-black carbon absorption at 404 nm was well correlated
