Tire Wear in the Environment 2: White Board by

2024-08-12 08:58:40 UTC

Concentrations for ecotoxicity tests

2024-08-12 09:14:29 UTC

Effects on plants

2024-08-12 09:15:15 UTC

Reference Standards

Anne_Richter_HSZG_ZIRKON — 2024-08-12 09:17:22 UTC

Which reference materials do you use and for what purpose?

Analytics

Anne_Richter_HSZG_ZIRKON — 2024-08-12 09:18:04 UTC

Transport into the soil

2024-08-12 09:30:34 UTC

Exposure time in ecotoxicity tests

2024-08-12 09:39:54 UTC

2024-08-12 09:42:49 UTC

Which markers should be used for a marker based analyses of tire wear particles?

Realistic concentrations (10-100 mg/L)

2024-08-12 09:45:20 UTC

Assessment of the current hazard potential
Probability of seeing effects is rather low

Higher concentrations (>100 mg/L)

2024-08-12 09:48:48 UTC

Definition of future threshold values
Probability of seeing effects is higher

Markers for ecotoxicity tests

2024-08-13 06:17:33 UTC

Which markers would you recommend for ecotoxicity tests with plants? (e.g. chlorophyll content)

Problems

2024-09-02 14:30:25 UTC

Where do you see problems in the research field of tire wear?

2024-09-02 14:31:27 UTC

Missing reference standards and particles for experiments

faith_chebettumwet — 2024-11-26 14:46:16 UTC

faith_chebettumwet — 2024-11-26 14:57:38 UTC

How do environmental factors such as photooxidation, ozonation, and shear stress influence the formation of tire and road wear particles?
Leaching and co-transport of microorganic pollutants to roadside soils occurs. Are these pollutants a great environmental concern or benign?

faith_chebettumwet — 2024-11-26 15:10:02 UTC

What are the most effective methods for sampling and analyzing TRWPs on a road surface or roadside soils?

Optimizing Sample Preparation

faith_chebettumwet — 2024-11-26 15:13:58 UTC

What sampling preparation techniques are most reliable for enriching TRWPs collected from different environmental matrices?

Identification and Quantification of TRWP

faith_chebettumwet — 2024-11-26 15:14:09 UTC

Which analytical methods, such as spectroscopy or chromatography, are best suited for accurately identifying and quantifying TRWPs in complex environmental samples?

2024-11-28 11:02:55 UTC

What other natural and man-made sources could tire wear markers possibly have?

long term studies and the combination of more markers could reveal chronic and less obvious effects.

Anne_Richter_HSZG_ZIRKON — 2024-11-28 12:08:32 UTC

2024-11-28 12:15:01 UTC

Guardrails, car-body parts, other rubber materials, anti-icing fluids,...

Additives

Anne_Richter_HSZG_ZIRKON — 2024-11-28 12:17:54 UTC

Additives like antioxidants and plasticizers ara also common in other synthetic materials like (geo)textiles.

2024-11-28 12:20:53 UTC

Time efficiency?

2024-11-28 12:26:39 UTC

Degradation of polymer chains due to radiation?

Zink in high concentrations harmful, 6-PPD / 6-PPDQ toxic to salmon and other fish larva

2024-11-28 14:25:19 UTC

SBR as reference spectra because it's easy to obtain

jenniferdutschke — 2024-11-29 08:54:31 UTC

working with tire wear particles is quite challenging itself, for example the electrostatic charge makes it difficult to transfer the particles

jenniferdutschke — 2024-11-29 08:54:59 UTC

for zinc it could be the crash barrier on the side of the road

jenniferdutschke — 2024-11-29 08:56:29 UTC

Hydrogen peroxide

jenniferdutschke — 2024-11-29 10:53:09 UTC

Might depend on the purpose: mass based shows no information about particle size, shape and size distribution

jenniferdutschke — 2024-11-29 10:54:30 UTC

Pyr-GC-MS

jenniferdutschke — 2024-11-29 10:59:35 UTC

Higher shear stresses lead to a higher formation of twps
Adsorption of heavy metals to tire wear particles -> transport to other ecosystems where they are leached again

jenniferdutschke — 2024-11-29 11:01:20 UTC

electrical separation and density separation