Heavy
Metal & VOC Studies:
The supplier Sylva
uses is constantly monitoring the impurity levels
in the colorant manufactured
at their facility. This colorant was analyzed for
heavy metals and also for Volatile Organic Compounds
(VOC). No detectable VOC levels have been found.
The summary of heavy metals content and the data
interpretation is presented as follows:
Compound |
Soil Screening Levels (SSL)* |
Levels (ppm) in |
Levels (ppm) after |
|
(EPA-s guidance values) |
color concentrate |
application on mulch |
Chromium
(total) |
390
ppm |
98.2 |
0.49 |
Lead |
400
ppm |
24.5 |
0.12 |
Zinc |
23,000
ppm |
103.4 |
0.52 |
| • |
Soil screening levels based
on direct ingestion of soil. |
| • |
Based on heavy metals data - the concentrated colorant
levels are below EPA Superfund soil screening levels
(SSL). SSL levels were used as guidelines for this
data interpretation. |
http://www.epa.gov/superfund/resources/soil/appd_a.pdf
Toxicity
Studies | Heavy
Metal & VOC Studies | Arsenic
Study
