56 research notes 33 questions

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air-quality blog barnraising blog-submission answered barnstar:basic barnraising-2017 category:test-limits activity:hydrogen-sulfide activity:h2s-copper-pipe

air-quality

310 people discussing

IMTT explosions: Need for Purple Air in St Rose by @eustatic
What are the best ways for communities to engage with content posted to our Wild Rice project? by @noah_ben_furman
Rising PM 2.5 in St James by @tylerknight
6 notes | 1 question | 19 comments by @gretchengehrke
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answered

5 people discussing

Where can diffusion tubes for detecting nitrogen dioxide be found in different parts of the world? by @warren
DIY Salinity Measurements with Coqui and/or Multimeter? by @Bronwen
How do I interpret the relationship between the schema.rb file and the models? by @bsugar
0 notes | 8 questions | 34 comments by @gretchengehrke
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barnraising

13 people discussing

Learning for Justice in a Climate Changing World by @amocorro
Home-Made Disaster Kit: Plan Ahead With This Game! by @Bronwen
Texas Barnraising: Brainstorming the Emergency Response Toolkit by @Bronwen
1 note | 0 questions | 14 comments by @gretchengehrke
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barnraising-2017

1 person discussing

Folding-Beijing: A Board Game based on Beijing eviction action by @shanlter
Can you use rubbing alcohol or nail polish remover for prepping copper for Hydrogen Sulfide test? by @zengirl2
Local Perspectives at Barnraising 2017 by @a1ahna
1 note | 0 questions | 10 comments by @gretchengehrke
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blog

208 people discussing

Water monitoring 101 with Vernon Haltom by @junior_walk1337
Logging Complex Odors by @sarasage
Announcing New Fellowship Team: Game Over Formosa! by @stevie
5 notes | 0 questions | 15 comments by @gretchengehrke
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blog-submission

9 people discussing

A South Dakota resident's story by @eightballocto
GSoC 2021 Proposal - Education-related Usability Upgrades by @anirudhprabhakaran3
Community Science and Monitoring Networks in Central California by @amocorro
1 note | 0 questions | 0 comments by @gretchengehrke
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copper

0 people discussing

Using UVC or "deep UV" light to detect lead by fluorescence by @warren
Using the Wheestat in a real time device by @klplum
Literature Review: Copper Rod Analysis by @ErikHanley11
0 notes | 2 questions | 2 comments by @gretchengehrke
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data-logging

5 people discussing

EnviroDIY Monitoring Station by @StroudCenterScott
Best Method(s) of Datalogging Location in the Field Without Cell Reception? by @sarasage
What are ways to make dense CSV data more readable? by @warren
0 notes | 1 question | 5 comments by @gretchengehrke
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design

4 people discussing

Introducing a new Dashboard for PublicLab.org by @warren
MA research project 'Speculative Future on Mars: Online Co-design Workshop on saturdays' by @miles70
Masters research project 'Speculative Future on Mars: Online Co-design Workshop on saturdays' by @miles70
0 notes | 1 question | 6 comments by @gretchengehrke
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dust

9 people discussing

how do we determine if sand is silica by @MegSheehan
Log Simple Air Sensor data to SD card by @imvec
Simple air sensor assembly notes by @natevw
2 notes | 0 questions | 7 comments by @gretchengehrke
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event

53 people discussing

Event: Messages from the Mississippi Student Art Exhibition by @a1ahna
Event: A conversation with Yutsi, creator of NORCO the game by @a1ahna
Virtual Event: Environmental Storytelling - Stories from the Field by @fongvania
1 note | 0 questions | 0 comments by @gretchengehrke
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filters

0 people discussing

Analysis of Dual-Bandpass NDVI Filters using Python by @ektopyrotic
How to do the white-balancing for the RED filter? by @xmv79667
Building Snake Plant Air Remediation kit in Bangalore, India by @deeptalaxmibharadwaj
0 notes | 1 question | 1 comment by @gretchengehrke
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filtration

0 people discussing

Effective low-cost water filters to remove hydrogen sulfide? by @gretchengehrke
PureLab：Experiment and Installing Water Filters Record In Banmentun by @shanlter
Inexpensive HEPA Filter Fan project to reduce air pollution by @Melissa
0 notes | 1 question | 0 comments by @gretchengehrke
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formaldehyde

7 people discussing

Statistics for Action Air Quality Guide by @kgradow1
Are there any other professional instruments that measures different VOC besides PID (photoionisation detector)? by @stevie
What is the air flow requirement for air sampling tubes? Any inexpensive method? by @BostonFern
1 note | 1 question | 11 comments by @gretchengehrke
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frac-sand

4 people discussing

Communicating expectations from Chippewa County residents concerned with frac sand mines by @bhamster
How to connect an anemometer to an air particulate monitor? by @crispinpierce
Appreciating Reporting Support Materials by @stevie
3 notes | 0 questions | 6 comments by @gretchengehrke
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h2s

0 people discussing

Detect Hydrogen Sulfide (Fart ) in Public Toilets with Arduino UNO/NodeMCU(ESP8266) by @silentsairam
Response to Alternative Copper Sheet Preparation Method on Public Lab by @ErikHanley11
Qualitative Time Lapse of Copper Corrosion by @ErikHanley11
1 note | 6 questions | 5 comments by @gretchengehrke
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h2s-copper-pipe

1 person discussing

Response to Alternative Copper Sheet Preparation Method on Public Lab by @ErikHanley11
Qualitative Time Lapse of Copper Corrosion by @ErikHanley11
Two Rounds of Copper Rod Test Making by @ErikHanley11
1 note | 3 questions | 12 comments by @gretchengehrke
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hydrogen-sulfide

2 people discussing

What are health and environmental concerns for sewage smell in a home? by @stevie
[Talk Recording] Mobilizing People to Act on Air Pollution with the Bucket Air Monitor - a Community Science Tool by @amocorro
Response to Alternative Copper Sheet Preparation Method on Public Lab by @ErikHanley11
2 notes | 7 questions | 14 comments by @gretchengehrke
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indoor-air-quality-monitoring

1 person discussing

What is Particulate Matter (PM) and why should you be concerned? by @amocorro
Extra Super Volatile by @cfastie
Nano particle monitoring by @cfastie
0 notes | 1 question | 2 comments by @gretchengehrke
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ingredients

0 people discussing

What is a good resource for learning about chemical and toxicological information? by @gretchengehrke
Spectrometry by @cosettespafford
0 notes | 1 question | 1 comment by @gretchengehrke
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knowflow

3 people discussing

KnowFlow NB-IoT version by @rockets
KnowFlow will have a NB-IoT version one in few weeks by @rockets
Testing the DF Robot pH Sensor by @wmacfarl
0 notes | 1 question | 2 comments by @gretchengehrke
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law-and-policy

8 people discussing

Expertise on Minnesota Native American and Tribal Law by @JuliaGuerrein
Do you have any examples of community-based lawyering or policy work? by @JuliaGuerrein
Question: What challenges can community members expect during an Environmental Impact Statement (EIS) Process and open comment period? by @michelleiL
0 notes | 5 questions | 6 comments by @gretchengehrke
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microscopes

7 people discussing

Replicating IBM's Lensless, Holographic, RPi Microscope? by @wln215
driver usb camera community microscope by @francesco49
Build a low-magnification "dissection microscope" for microplastics by @warren
1 note | 0 questions | 0 comments by @gretchengehrke
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particle-monitoring

1 person discussing

Report: Particle Visualization Event by @stevie
Particle Visualization Event in Hixton, WI by @gretchengehrke
What is the scenario under which you would use an optical vs. a passive monitor to measure dust? by @kgradow1
2 notes | 0 questions | 2 comments by @gretchengehrke
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particulate-matter

2 people discussing

Rising PM 2.5 in St James by @tylerknight
One Month of PM 2.5 Data around St James by @tylerknight
Has anyone tried establishing battery backups for Purple Air? by @eustatic
1 note | 0 questions | 4 comments by @gretchengehrke
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particulates

0 people discussing

Is there a predictive relationship between the number of PM 2.5 and smaller airborne particulates compared to the mass of the same ug per cubic meter? by @Tomp
Event: Clean Air Council + Delaware Riverkeeper Network by @liz
Particulate sensor using a STBM271 by @david_uwi
1 note | 0 questions | 6 comments by @gretchengehrke
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pm

12 people discussing

Rising PM 2.5 in St James by @tylerknight
One Month of PM 2.5 Data around St James by @tylerknight
What are some good trouble shooting tips for installing/maintaining a PurpleAir? by @stevie
4 notes | 0 questions | 10 comments by @gretchengehrke
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riffle

13 people discussing

Oil and Gas Hardware Fellow Introduction by @wmacfarl
Voltage generation for conductivity sensor by @roberts_ecofarm
DIY conductivity Sensors by @roberts_ecofarm
0 notes | 1 question | 7 comments by @gretchengehrke
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sensitivity

0 people discussing

What is the hydrogen sulfide concentration range that can be monitored using a copper tarnish method? by @gretchengehrke
Table for choosing monitoring tools by @warren
Increasing brightness of fluorescence spectra by @warren
0 notes | 1 question | 0 comments by @gretchengehrke
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smart-form

2 people discussing

'Smartphone App for Residential Testing of Formaldehyde' Paper published (Open Access) by @nshapiro
SmART-Form Paper Published by Public Health Nursing by @nshapiro
Looking for hands-on help with a datalogger! by @Bronwen
0 notes | 1 question | 6 comments by @gretchengehrke
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threshold

0 people discussing

What is the hydrogen sulfide concentration range that can be monitored using a copper tarnish method? by @gretchengehrke
0 notes | 1 question | 0 comments by @gretchengehrke
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validation

0 people discussing

How can we safely try out and evaluate a hydrogen sulfide test? by @warren
What is the hydrogen sulfide concentration range that can be monitored using a copper tarnish method? by @gretchengehrke
Dustduino potentiometer testing by @imvec
0 notes | 1 question | 0 comments by @gretchengehrke
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water-filters

0 people discussing

WATER-QUALITY: SUMMER 2019 QUEENSBRIDGE TECH LAB COMMUNITY SCIENCE PROJECT by @SadiePrego
Effective low-cost water filters to remove hydrogen sulfide? by @gretchengehrke
Water Filter Effectiveness by @Mempet
0 notes | 1 question | 1 comment by @gretchengehrke
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water-quality

151 people discussing

Analizar señal de audio del sensor Coqui con Audacity by @imvec
Añadir clavija al sensor Coqui para grabar las mediciones by @imvec
The amazing Micro-Hoek microscope by @alejobonifacio
2 notes | 1 question | 23 comments by @gretchengehrke
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wisconsin

1 person discussing

Where can polluted soils be placed? by @amocorro
What are people doing about polluted soils that get put back as fill? by @amocorro
Sentinel Training Online by @stevie
2 notes | 0 questions | 3 comments by @gretchengehrke
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@gretchengehrke

@gretchengehrke

Joined over 7 years ago

92 followers • 0 following

I'm the Data and Advocacy Steward with Public Lab, and am an avid environmentalist living in Durham, North Carolina. My background is in environmental geochemistry, and I am interested in the intersections and overlaps between environmental science and social justice. Joining Public Lab, I am looking forward to getting involved in environmental protection in a more tangible way.

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