1. ARSENIC DETECTION

2. CONTENT BACKGROUND GOAL & FOCUS PROJECT WORKING
FUTURE PLANNING & CHALLENGES

3. Arsenic was estimated to cause about 3700 deaths in Bangladesh alone.
BACKGROUND
Arsenic was estimated to cause about 3700 deaths in Bangladesh alone.

4. BACKGROUND
Millions of people are probably affected by arsenic poisoning from drinking water.

5. BACKGROUND
Some people even don’t know that they are drinking water contaminated by arsenic.
1.lack the awareness of arsenic problems
2.arsenic is invisible in water

6. To raise people’s awareness of arsenic problems
GOAL & FOCUS
To raise people’s awareness of arsenic problems
To help people figure out whether the water is contaminated by exceeding arsenic or not
To analyze the global condition of arsenic in water

7. PROJECT WORKING

8. PROJECT WORKING
THE MAP

9. PROJECT WORKING CHANNEL: HOMEPAGE INTRODUCTION ARSENIC DETECTION MAP
THE WEBSITE
CHANNEL:
HOMEPAGE
INTRODUCTION
ARSENIC
DETECTION
MAP
DONATION

10. a polymer hydrogel-based colorimetric dipstick sensor
PROJECT WORKING
THE DETECTOR
method
disadvantages
advantages
biological
biosensor(eg. bacteria E. coli)
1.lag time: 5 hours;2.special living condition for reaction: temperature,sterile condition;3.complexity and expense of the manufacturing process
safe
chemical
mercuric bromide strip
1.additional chemical substances;2.highly toxic intermediate product
fast
silver nitrate strip
a polymer hydrogel-based colorimetric dipstick sensor
　additional chemical substances
fast, safe, low detection limit, can be identified by naked eye, good stability, low cost, high reproducibility

11. PROJECT WORKING
THE DETECTOR

12. Spectrophotometer readout
PROJECT WORKING
SPECIFIC MEDIUM ROOM
Specific condition
REACTION ROOM
MONITORING ROOM
Color change
Spectrophotometer readout
WATER SAMPLE
OUTPUT
THE DETECTOR

13. PROJECT WORKING
THE APP
FUNCTION:
ARSENIC
MAP OF ARSENIC
UPLOAD DATA

14. FUTURE PLANNING
&
CHALLENGES

15. THANKS FOR LISTENING