CN102018516A - 一种指纹粉 - Google Patents

一种指纹粉 Download PDF

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Publication number
CN102018516A
CN102018516A CN2010105853549A CN201010585354A CN102018516A CN 102018516 A CN102018516 A CN 102018516A CN 2010105853549 A CN2010105853549 A CN 2010105853549A CN 201010585354 A CN201010585354 A CN 201010585354A CN 102018516 A CN102018516 A CN 102018516A
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fingerprint
powder
percent
human body
components
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CN2010105853549A
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English (en)
Inventor
陶运祥
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Individual
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Priority to CN2010105853549A priority Critical patent/CN102018516A/zh
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Abstract

本发明公开了一种指纹粉,包括以下质量百分比的组分:活性炭 45%-55%;铁粉 15%-25%;硅粉 10%-20%;NaCl 5%-15%。本发明将上述组分均匀混合即可,利用以上组分对人体汗液中的脂肪和尿酸产生化学反应,指纹自然呈现。

Description

一种指纹粉
技术领域
本发明涉及一种指纹粉,尤其涉及一种能够显现人体指纹的粉。
背景技术
人体的指纹是每个人特有的一种标记,可以作为识别人体的重要特征,例如在刑侦人员侦办案件的时候,利用指纹来确定嫌疑犯是非常重要的手段。所以如何将人接触过的地方将指纹留下来就显得非常重要。
发明内容
本发明提供一种能够在人体手指接触过的地方将指纹显现出来的指纹粉。本发明的技术方案为:一种指纹粉,包括以下质量百分比的组分:活性炭45%-55%;铁粉 15%-25%;硅粉 10%-20%;NaCl 5%-15%。
本发明将上述组分均匀混合即可,利用以上组分对人体汗液中的脂肪和尿酸产生化学反应,指纹自然呈现。
人体通过手指排出的分泌物中含有汗液、水和酯肪的成分,指纹粉中含有使酯分解所需的催化剂(铁粉和硅粉)以及使酯分解后使之显色的显色剂炭黑。当手指上的指纹留在物体表面时,同时也将人体的分泌物留在上面,其中指纹的留痕深浅不一,用指纹粉使其显色后产生人体指纹的效果。
具体实施方式
实施例1:
采用以下组分比例混合原料:
活性炭 45%;铁粉 25%;硅粉 20%;NaCl 10%。
将指纹粉放在人体手指触摸过的地方,人体通过手指排出的分泌物中含有汗液、水和酯肪的成分,发生以下反应:
R-COO-M+H2O----催化剂-------R-COOH+M-OH
酯类物                      脂肪酸 醇
指纹粉中的铁粉和硅粉作为催化剂,反应后产生脂肪酸,炭黑作为显色剂显色,这样指纹的留痕就会显现出来。
实施例2:
采用以下组分比例混合原料:
活性炭 55%;铁粉 15%;硅粉 15%;NaCl 15%。
将指纹粉放在人体手指触摸过的地方,人体通过手指排出的分泌物中含有汗液、水和酯肪的成分,发生以下反应:
R-COO-M+H2O----催化剂-------R-COOH+M-OH
酯类物                      脂肪酸 醇
指纹粉中的铁粉和硅粉作为催化剂,反应后产生脂肪酸,炭黑作为显色剂显色,这样指纹的留痕就会显现出来。

Claims (1)

1.一种指纹粉,其特征在于,包括以下质量百分比的组分:活性炭 45%-55%;铁粉 15%-25%;硅粉 10%-20%;NaCl 5%-15%。
CN2010105853549A 2010-12-06 2010-12-06 一种指纹粉 Pending CN102018516A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105853549A CN102018516A (zh) 2010-12-06 2010-12-06 一种指纹粉

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105853549A CN102018516A (zh) 2010-12-06 2010-12-06 一种指纹粉

Publications (1)

Publication Number Publication Date
CN102018516A true CN102018516A (zh) 2011-04-20

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Family Applications (1)

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CN2010105853549A Pending CN102018516A (zh) 2010-12-06 2010-12-06 一种指纹粉

Country Status (1)

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CN (1) CN102018516A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105326509A (zh) * 2015-10-16 2016-02-17 同济大学 一种指纹显现磁性粉及其制备方法与应用

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105326509A (zh) * 2015-10-16 2016-02-17 同济大学 一种指纹显现磁性粉及其制备方法与应用

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Application publication date: 20110420