Method for simultaneously determining contents of various elements in soil or deposits
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for element content and sediments, which is used in measurement devices, preparation of test samples, material excitation analysis, etc. It can solve the problems of narrow application range, cumbersome element determination methods, and complicated digestion steps, so as to prevent cross-contamination and shorten the The effect of digestion time and shortening of measurement time
Inactive Publication Date: 2016-05-25
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF0 Cites 22 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] In order to solve the problems of complicated digestion steps of existing soil or sediment samples, narrow scope of application and complicated element determination methods, the present invention proposes the following technical solutions:
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] 1. GSS-15 standard soil sample (GBW07429, Yangtze River plain area)
[0019] The present embodiment applies the method of the present invention to the determination of metal elements and phosphorus elements in soil samples, and the specific determination steps are as follows:
[0020] (1) Accurately weigh 0.1000±0.0010g of the ground dry soil sample to be tested, place it in a 10mL TFM polytetrafluoroethylene microwave digestion tank, add 6mL of high-grade pure aqua regia (the volume ratio of concentrated nitric acid and concentrated hydrochloric acid is 1: 3) and 2mL of high-grade pure hydrofluoric acid, let it stand for 10 minutes, and use the digestion solution without adding soil samples as a blank control;
[0021] (2) The temperature and time parameters of the microwave digestion program are set, and the solution in the above step (1) is subjected to microwave digestion. The specific microwave digestion program is as follows:
[0022]
[0023] (3) After the mi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to detection technology for element contents, and provides a method for simultaneously determining contents of arsenic, cadmium, lead, vanadium, zinc, manganese and phosphor in soil or deposits. The method mainly comprises the following steps: (1) 0.1g of a grinded drying soil sample is accurately weighed and placed in a TFM microwave digestion pot, a certain proportion of aqua regia and hydrofluoric acid are added, and a solution is allowed to stand; (2) an appropriate microwave digestion program is set, and microwave digestion is carried out for the solution in the step (1); (3) after the microwave digestion program ends, an acid-driving device is used for heating and evaporating the digestion solution in the step (2) to a dry state, and total transfer, volumetric flask preparation, and filtering are carried out; (4) ICP-OES is used for determining contents of arsenic, cadmium, lead, vanadium, zinc, manganese and phosphor in the clear liquor in the step (3); (5) ICP-MS is used for determining contents of elements in the clear liquor in the step (3) which do not reach detection limits in the step (4) once more. The method has the advantages of simple steps, simplified operation, saved soil samples, reduced personal error, minimized environment interference, and improved working environments.
Description
technical field [0001] The invention relates to detection technology of element content. Background technique [0002] my country's current monitoring standards for soil or natural water sediments are mainly "Technical Specifications for Soil Environment Monitoring" (HJ / T166-2004) issued by the former State Environmental Protection Administration, and "Lead, Cadmium, Vanadium, Phosphorus, etc." issued by the Ministry of Water Resources. "Determination of 34 Elements" (SL394-2007) and "Marine Monitoring Regulations" (GB17378-2007) jointly promulgated by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Administration Atomic Fluorescence Method" (GB / T22105-2008). These standards use electric hot plate (most elements) or water bath (arsenic) digestion method to pre-treat soil or sediment samples. These methods are complicated to operate, large in sampling volume, time-consuming and labo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N27/62G01N1/28G01N1/44
Inventor 单保庆狄贞珍张洪
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Login to view more 
Login to view more