On December 4, according to the national standards revision plan promulgated by the State Standardization Commission, the Ministry of Industry and Information Technology organized the compilation of compulsory national standards for the classification and requirements of fertilizers and submitted them to the public for approval. The deadline is January 4, 2018 Day. Standard involves centrifuges, analytical balances and other common laboratory use instrument , As well as microwave digestion, inductively coupled plasma emission spectrometer , Gas chromatography - mass spectrometer, ultrasonic cleaning machines, solid-phase extraction devices and other equipment.
According to the standard announcement, this standard was proposed by the China Petroleum and Chemical Industry Federation, drafted according to the rules given in GB / T 1.1. Drafting units are Shanghai Chemical Industry Research Institute Co., Ltd., Shandong Institute of product quality supervision and inspection, Shanghai Exit Inspection Quarantine Bureau of industrial products and raw materials testing technology center, Jiangsu Provincial Institute of product quality supervision and inspection, Hunan Province Institute of product quality supervision and inspection and other units.This standard was first released.
This standard specifies the classification of fertilizers, requirements, test methods, inspection rules, labeling.Applicable to a variety of process manure produced. Standard reference to a number of documents, including a number of design instrumental analysis, including the determination of GB / T 2441.2 urea Methods - Part 2: Biuret content spectrophotometry; GB / T 29400 Determination of trace anions in fertilizers by ion chromatography; Determination of oxytetracycline, tetracycline, chlortetracycline and doxycycline in GB / T 32951 organic fertilizers GB / T 32952 Determination of polycyclic aromatic hydrocarbons in fertilizers by gas chromatography - mass spectrometry GB / T 32953 Determination of melamine in fertilizers by ion chromatography and so on.
In Appendix C, the content of total nickel, total cobalt, total selenium, total vanadium, total antimony and total thallium in fertilizers is regulated by inductively coupled plasma atomic emission spectrometry. The contents of nickel, cobalt, selenium, Vanadium, antimony and thallium were extracted by microwave digestion with nitric acid. The digested solution was determined by inductively coupled plasma atomic emission spectrometry, and microwave digestion and inductively coupled plasma atomic emission spectrometry were used.
Appendix D describes the determination of the content of phthalate plasticizers in fertilizers using gas chromatography-mass spectrometry. The phthalate plasticizers in the sample were eluted with n-hexane + dichloromethane (volume ratio 5 + 1) as solvent, extracted by ultrasonic method, and then measured by gas chromatography-mass spectrometry (GC-MS). Quantitative ion chromatographic method was used to characterize the nuclear ratio and its abundance ratio of fragment ion by selective ion monitoring mode. Using gas chromatography - mass spectrometry, analytical balances, centrifuges, ultrasonic cleaning machines, nitrogen dryer, solid phase extraction equipment and other equipment.
At present, China has continuously deepened the task of standardization reform. Since the beginning of 2017, the Ministry of Industry and Information Technology has continued to integrate and revise the relevant mandatory standards so as to achieve 'one market, one bottom line and one standard.' At the same time, the state is actively Improve compulsory standard management system, stress mandatory standards to keep the bottom line, protect personal health and life and property, national security, ecological and environmental safety and to meet the basic requirements of social and economic management.
Ministry of Industry and Information Technology to complete the "fertilizer grading and requirements of the mandatory national standard-setting work, and to be approved for publicity, provides fertilizer classification, requirements, test methods, inspection rules, labeling, on the safety of fertilizer play an important role. Environmental problems are becoming more and more serious. Soil pollution is an important part of environmental remediation. Doing a good job in grading and requirements of fertilizers also fundamentally alleviates the harm of fertilizers to the soil and is an urgent need to be completed.
