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SUMMARY OF COMPOUND DETECTIONS AND CONCENTRATIONS

 

SVOCs


| Contents | Summary of Compound Detections and Concentrations—Organochlorines and Trace Elements |

Concentrations of semivolatile organic compounds, organochlorine compounds, and trace elements detected in fish and clam tissue and bed sediment of the Trinity River Basin Study Unit.

[µg/kg, micrograms per kilogram; --, not measured; %, percent; µg/g, micrograms per gram; trade names may vary]

EXPLANATION

 

explanation graph for detections


Guideline for the protection of aquatic life e


Range of detections in fish and clam tissue in all 20 Study Units

Range of detections in bed sediment in all 20 Study Units

Detection in fish tissue or bed sediment in the Trinity River Basin Study Unit

Detection in clam tissue in the T
rinity River Basin Study Unit

 

Semivolatile
organic compound

(Trade or common name)
Rate of detec-
tion b 
Concentration, in mg/kg
explanation graph

1,2-Dimethylnaphthalene

--

4%

graph showing detections

1,6-Dimethylnaphthalene

--

15%

graph showing detections

1-Methylphenanthrene

--

27%

graph showing detections

1-Methylpyrene

--

35%

graph showing detections

2,2-Biquinoline

--

4%

graph showing detections

2,3,6-Trimethylnaphthalene

--

4% 

graph showing detections

2,6-Dimethylnaphthalene

--

58%

graph showing detections

2,6-Dinitrotoluene

--

2%

graph showing detections

2-Ethylnaphthalene

--

8% 

graph showing detections

2-Methylanthracene

--

35% 

graph showing detections

4,5-Methylene­
phenanthrene

--

35%

graph showing detections

9H-Carbazole

--

46%

graph showing detections

9H-Fluorene

--

39% 

graph showing detections

Acenaphthene

--

15%

graph showing detections

Acenaphthylene

--

22%

graph showing detections

Acridine

--

35%

graph showing detections

Anthracene

--

46%

graph showing detections

Anthraquinone

--

50%

graph showing detections

Benz(a)anthracene

--

51%

graph showing detections

Benzo(a)pyrene

--

49%

graph showing detections

Benzo(b)fluoranthene

--

51%

graph showing detections

Benzo(g,h,i)perylene

--

37%

graph showing detections

Benzo(k)fluoranthene

--

51% 

graph showing detections

Butylbenzylphthalate

--

88%

graph showing detections

Chrysene

--

51%

graph showing detections

Di-n-butylphthalate

--

95%

graph showing detections

Di-n-octylphthalate

--

15%

graph showing detections

Dibenz(a,h)anthracene

--

27%

graph showing detections

Dibenzothiophene

--

12%

graph showing detections

Diethylphthalate

--

61%

graph showing detections

Dimethylphthalate

--

32%

graph showing detections

Fluoranthene

--

85%  

graph showing detections

Indeno(1,2,3-cd)pyrene

--

46%

graph showing detections

Isoquinoline

--

19%

graph showing detections

Naphthalene

--

8%

graph showing detections

Phenanthrene

--

69%

graph showing detections

Phenanthridine

--

12%

graph showing detections

Phenol

--

50%

graph showing detections

Pyrene

--

81%  

graph showing detections

bis(2-Ethyl­hexyl)phthalate

--

100%

graph showing detections

p-Cresol

--

50%

graph showing detections


a Selected water-quality standards and guidelines (Gilliom and others, in press). 

b Rates of detection are based on the number of analyses and detections in the Study Unit, not on national data. Rates of detection for herbicides and insecticides were computed by counting only detections equal to or greater than 0.01 mg/L to facilitate equal comparisons among compounds, which had widely varying detection limits. For herbicides and insecticides, a detection rate of "<1%" means that all detections are less than 0.01 mg/L, or the detection rate rounds to less than 1%. For other compound groups, all detections were counted and minimum detection limits for most compounds were similar to the lower end of the national ranges shown. Method detection limits for all compounds in these tables are summarized in (Gilliom and others, in press). 

c Detections of these compounds are reliable, but concentrations are determined with greater uncertainty than for the other compounds and are reported as estimated values (Zaugg and others, 1995). 

d The guideline for methyl tert-butyl ether is between 20 and 40 mg/L; if the tentative cancer classification C is accepted, the lifetime health advisory will be 20 mg/L (Gilliom and others, in press). 

e Selected sediment-quality guidelines (Gilliom and others, in press). 

 

 



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