Simple, field portable colorimetric detection device for organic peroxides and hydrogen peroxide
View Patent ↗A simple and effective system for the colorimetric determination of organic peroxides and hydrogen peroxide. A peroxide pen utilizing a swipe material attached to a polyethylene tube contains two crushable vials. The two crushable vials contain a colorimetric reagent separated into dry ingredients and liquid ingredients. After swiping a suspected substance or surface the vials are broken, the reagent is mixed thoroughly and the reagent is allowed to wick into the swipe material. The presence of organic peroxides or hydrogen peroxide is confirmed by a deep blue color.
1. An apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide, comprising:
a tube,
a swipe material attached to said tube,
a first crushable vial in fluid communication said swipe material,
a first colorimetric reagent comprising methanol, acetic acid and 1-napthol in said first vial,
a second crushable vial in fluid communication said swipe material, and
a second colorimetric reagent comprising iron sulfate heptahydrate and potassium disulfate in said second vial.
2. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said tube is a polyethylene tube.
3. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said first colorimetric reagent in said first vial is a liquid colorimetric reagent.
4. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said second colorimetric reagent in said second vial is a dry colorimetric reagent.
5. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said first colorimetric reagent in said first vial is a liquid colorimetric reagent and wherein said second colorimetric reagent in said second vial is a dry colorimetric reagent.
6. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a porous swipe material.
7. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a porous plastic swipe material.
8. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a microfibers swipe material.
9. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a cellulose swipe material.
10. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a nitrocellulose swipe material.
11. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a filter paper swipe material.
12. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is a mutli-cellular foam swipe material.
13. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is wetted with organic solvent.
14. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material is wetted with acetonitrile.
15. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said swipe material has an end with a tapered point.
16. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said first crushable vial and said second crushable vial are connected to said tube on opposite sides of said tube.
17. The apparatus for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 1 wherein said first crushable vial and said second crushable vial are connected to said tube with said first crushable vial above said second crushable vial.
18. A method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide, comprising the steps of:
providing a tube,
attaching a swipe material to said tube,
connecting a first crushable vial in fluid communication said swipe material,
connecting a second crushable vial in fluid communication said swipe material,
adding a first colorimetric reagent comprising methanol, acetic acid and 1-napthol to said first vial, and
adding a second colorimetric reagent comprising iron sulfate heptahydrate and potassium disulfate to said second vial.
19. The method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 18 wherein said step of adding a first colorimetric reagent to said first vial comprises adding a liquid colorimetric reagent to said first vial.
20. The method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 18 wherein said step of adding a second colorimetric reagent to said second vial comprises adding a dry colorimetric reagent to said second vial.
21. The method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 18 wherein said step of adding a first colorimetric reagent to said first vial comprises adding a liquid colorimetric reagent to said first vial and wherein said step of adding a second colorimetric reagent to said second vial comprises adding a dry colorimetric reagent to said second vial.
22. The method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 18 including the step of wetting said swipe material with organic solvent.
23. The method of making a peroxide pen for the colorimetric determination of organic peroxides and hydrogen peroxide of claim 18 including the step of wetting said swipe material with acetonitrile.