Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Measuring method for harmful elements including lead, copper, chromium and cadmium in lotus root

A technology of harmful elements and determination methods, which is applied in the field of chemistry, can solve the problems of undiscovered detection of heavy metal elements in lotus root, and achieve the effect of small error and accurate results

Inactive Publication Date: 2007-09-26
CHECKOUT & QUARANTINE TECH CENT YUNNAN ENTRY &EXIT CHECKOUT & QUARANTINE BUR
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method and report on the detection of harmful heavy metal elements in lotus root

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
  • Measuring method for harmful elements including lead, copper, chromium and cadmium in lotus root
  • Measuring method for harmful elements including lead, copper, chromium and cadmium in lotus root
  • Measuring method for harmful elements including lead, copper, chromium and cadmium in lotus root

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Use the instrument:

[0036] Inductively coupled plasma atomic emission spectrometer (ICP-AES), model: LEEMANProdigy

[0037] 2 Reagents used:

[0038] The distilled water is double distilled water, and the chemical reagents are of superior grade.

[0039] Nitric acid (ρ1.42g / mL); perchloric acid (ρ1.67g / mL).

[0040] Lead, copper, chromium, cadmium standard stock solution: national standard reagent (GBW), the concentration is 1mg / mL.

[0041] 3 Lead, copper, chromium, cadmium calibration curve drawing

[0042] Use the mixed standard working solution, measure under the working conditions of the instrument in Table 1, and the computer automatically draws the calibration curves for lead, copper, chromium, and cadmium, as shown in Figures 1-4.

[0043] project

[0044] 4 Determination

[0045] 4.1 Lotus root sample preparation

[0046] Several sections of fresh lotus root were taken, washed, chopped and mixed evenly to prepare lotus root samples for tes...

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

No PUM Login to View More

Abstract

This invention relates to eat plant poison element of lead, copper, chromium and cadmium test method, which comprises the following steps: a, taking lotus root sample for cutting, mixing in the anti-acid container; b, on 30 to 40 ml aqua fortis and Fraude's reagent mixture each 10 gram; c, transplanting to heat board to generate brown gas and tanking down; d, then putting on heat board till the Fraude generates white smokes with remaining 0.5 to 1ml; e, cooling the liquid and adding 1 to 2ml aqua fortis each 10 gram and adding stilled water to 50 ml for mixing; f, using sense couple plasma atom emission spectrum device to draw correction curve; g, according to the tested spectrum intensity in step f, computer checks their concentration form the curve to compute the content.

Description

technical field [0001] The invention belongs to the field of chemistry, in particular to a method for determining harmful elements in edible plants. Background technique [0002] Food is used to maintain life, and people supplement various energy, nutrients and trace elements needed by the body through diet. Saying goodbye to the era of food scarcity, people pay more attention to the nutrition, safety and hygiene of food. Due to the destruction of nature by human activities, the rapid progress of industrialization and urbanization, the problem of environmental pollution is becoming more and more serious. Some of the food we depend on for survival Being polluted, food safety issues are getting more and more attention and concern from everyone. The invention provides a method for determining the harmful heavy metal elements lead, copper, chromium and cadmium in the lotus root, which can quickly and accurately detect the contents of the harmful substances lead, copper, chromiu...

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
no application Login to View More
IPC IPC(8): G01N21/68
Inventor 梁文君杨建明蔡四来李大山保亚红朱红玉
Owner CHECKOUT & QUARANTINE TECH CENT YUNNAN ENTRY &EXIT CHECKOUT & QUARANTINE BUR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com