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Kit for quickly detecting water sample lead on site

A technology for detection reagents and kits, which is applied in material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve the problem of high detection technology requirements, expensive equipment, and complicated pretreatment. problems, to shorten the detection time, avoid the waste of manpower and material resources, and simplify the operation process.

Inactive Publication Date: 2017-05-31
BEIJING AFD PHARMA TECH DEVCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented technology described by this patent simplifies its operations while improving accuracy during testing with respect to both environmental hazards such as lead or other substances found in drinking waters from sources like lakes or rivers. It also reduces costs associated with laborious procedures that require specialized training and materials, eliminates wasted human resource usage, ensures consistently reliable results over an extended period of use without requiring cleanup after each test, and provides flexibility when selecting different types of chemicals needed based upon their ability to bind metals (such as copper).

Problems solved by technology

The technical problem addressed in this patented text relates to finding ways to quickly identify harmful metals (leads) in various materials like drinks, paint, coating, electronics, batteries, and others without having to perform complicated procedures involving chemical reactions with dangerous substances.

Method used

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  • Kit for quickly detecting water sample lead on site
  • Kit for quickly detecting water sample lead on site
  • Kit for quickly detecting water sample lead on site

Examples

Experimental program
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Effect test

preparation example Construction

[0040] The preparation method of thiol adsorption filter paper:

[0041] Dry the quantitative analysis filter paper, and soak every 100g of dried quantitative analysis filter paper with 300ml (can be appropriately increased to 400ml) thioglycolic acid, 200ml (can be appropriately increased to 300ml) acetic anhydride, 90ml (can be appropriately increased to 120ml) concentration In a solution of 36v / v% acetic acid, 0.8ml (can be appropriately increased to 1.2ml) concentrated sulfuric acid and 25ml (can be appropriately increased to 35ml) deionized water, place it in a 37°C-39°C electric constant temperature closed drying box for 96h , take it out, wash it with deionized water until neutral, finally squeeze out the water and dry it in an electric constant temperature drying oven at 37°C-39°C.

[0042] 2. Lead detection test paper

[0043] The lead detection test paper is mercaptodithizone test paper.

[0044] Preparation method of mercaptodithizone test paper:

[0045] Immerse...

Embodiment 1

[0066] Example 1: Rapid detection of heavy metal lead in multiple polluted water samples

[0067] Match and number the 2ml pipette tips installed on the filter adsorption holder one by one with the reaction wells on the elution plate, then fold the thiol adsorption filter paper into a cone and insert it into the 2ml pipette installed on the filter adsorption holder In the suction head of the device, spare.

[0068] Using deionized water as a blank control, sequentially sample 1ml from multiple water samples suspected of lead pollution and instill in the corresponding numbered mercapto adsorption filter paper. For the residual liquid under each 2ml pipette tip, place the elution plate under the filter adsorption support, so that the tips of each 2ml pipette tip on the filter adsorption support are aligned with the reaction wells on the elution plate.

[0069] Afterwards, the thiol-adsorbed filter paper was eluted with hydrochloric acid eluent, dripping 100 μl each time, and el...

Embodiment 2

[0071] Example 2: Detection of lead in urine samples of professional workers

[0072] Match and number the 2ml pipette tips installed on the filter adsorption holder with the reaction wells on the elution plate one by one, then fold the thiol adsorption filter paper into a cone shape and insert it into the 2ml pipette installed on the filter adsorption holder In the suction head, spare.

[0073] Using deionized water as a blank control, take 1ml of the urine sample from the professional workers suspected of lead exposure and drip it into the corresponding numbered mercapto adsorption filter paper. For the residual liquid under the tip of each 2ml pipette, place the elution plate under the filter adsorption bracket, so that the tip of the 2ml pipette tip is aligned with the reaction wells on the elution plate.

[0074] Afterwards, the thiol-adsorbed filter paper was eluted with hydrochloric acid eluent, dripping 100 μl each time, and eluted twice in total. Make sure that the ...

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Abstract

The invention discloses a kit for quickly detecting water sample lead on site. The kit comprises a lead detection reagent, a lead test paper, a standard lead color card and a consumable material which are independently packaged, wherein the lead detection reagent includes a hydrochloric acid eluant and a sodium hydroxide neutralizing solution; the lead test paper is arranged as a sulfydryl dithizone test paper; the standard lead color card is arranged as a colorful picture after the developing reaction of 10ul standard lead solution on the sulfydryl dithizone test paper; the consumable material includes sulfydryl adsorption filter paper, a water sampling sucker, an external box, a filtering elution bracket, a shafting liquid absorber, an effluent tank and an elution plate. The kit has the beneficial effects that (1) the operation process is greatly simplified, the detection time is shortened, the detection can be completed within 30min and the quick qualitative determination for the lead on the sampling site can be realized; (2) high-cost device and high-level technicians are not required; (3) the detection sensitivity, stability and reliability all meet the requirement of hygienic evaluation standard; and (4) the test paper, the consumable material and the reagent are respectively independently packaged and are portable.

Description

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Claims

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Application Information

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Owner BEIJING AFD PHARMA TECH DEVCO
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