ASTM D4131-1984(2005) Standard Practice for Sampling Fish with Rotenone《用鱼藤酮采集鱼样的标准规程》.pdf
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1、Designation: D 4131 84 (Reapproved 2005)Standard Practice forSampling Fish with Rotenone1This standard is issued under the fixed designation D 4131; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers determination of the quantitativeand qualitative species composition of fish in a specified area.The successful use of
3、 this technique is dependent on: (1)preventing fish from escaping the sample area and (2) retriev-ing all affected fish, which may take up to three days.1.2 Advantages:1.2.1 Easily detoxified.1.2.2 All native freshwater fish are susceptible, but it haslow toxicity to mammals and birds.1.2.3 At low c
4、oncentrations fish toxicity depends on spe-cies, age, and size.1.2.4 The suffocating action is reversible.1.3 Limitations:1.3.1 It is less effective in cold (below 20C) and highlyalkaline water.1.3.2 Smaller fish and those without air bladders usually donot float.1.3.3 Completely random selection of
5、 sample areas is notpossible.1.3.4 Overkill beyond sample area can sometimes occur.1.3.5 Food web organisms may be eliminated.1.4 Applicationsthis practice is useful in both short- andlong-term studies for management and impact assessmentpurposes. It is adaptable to both lotic and lentic situations
6、inlittoral and limnetic areas.1.5 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the
7、user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. For specifichazards, see Section 6.2. Referenced Document2.1 ASTM Standards:2D 1193 Specification for Reagent Water3. Summary of Practice3.1 The sample
8、 area is blocked off with a small mesh net(s)and the volume of water to be treated is calculated. Therequired quantity of rotenone is diluted and distributedthroughout the water column in the sample area.All fish shouldbe affected and they should be collected for processing (1).34. Apparatus4.1 Vess
9、els, for measuring and mixing rotenone and forcollecting fish.4.2 Chemical Applicator, for boat use.4.2.1 Venturi Siphon or Automatic Boat Bailer that attachesto outboard motors cavatation plate.4.2.2 Gasoline-Powered Pump and Weighted PerforatedHose.4.3 Block-Off Net(s)14-in. (6.4-mm) bar mesh for
10、lake-reservoir and small stream use or34 to 1-in. (19 to 25 mm) barmesh for larger streams).4.4 Dip nets, for collecting fish.4.5 Flat-Bottom Boats, 12 to 14-ft or larger.5. Reagents5.1 Purity of ReagentsReagent grade chemicals shall beused in all tests. Unless otherwise indicated, it is intended th
11、atall reagents conform to the specifications of the Committee onAnalytical Reagents of the American Chemical Society where1This practice is under the jurisdiction of ASTM Committee E47 on BiologicalEffects and Environmental Fate and is the direct responsibility of SubcommitteeE47.01 on Aquatic Asses
12、sment and Toxicology.Current edition approved Mar. 1, 2004. Published June 1984. Originallyapproved in 1984. Last previous edition addition approved in 1999 as D413184(1999)e12For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For
13、 Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The boldface numbers in parentheses refer to the references at the end of thispractice.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
14、9, United States.such specifications are available.4Other grades may be used,provided it is first ascertained that the reagent is of sufficientlyhigh purity to permit its use without lessening the accuracy ofthe determination.5.2 Purity of WaterUnless otherwise indicated, referencesto water shall be
15、 understood to mean Type II reagent waterconforming to Specification D 1193.5.3 Rotenone, emulsion with 5 % active ingredient (2).5.4 Potassium Permanganate Crystals, any size.6. Hazards6.1 Avoid skin-eye contact and ingestion.7. Procedures7.1 In lakes and reservoirs, fish samples can be obtained if
16、the block-off net is long and deep enough.7.1.1 Four to six people and two boats are usually requiredto conduct a 1-acre (4,046 m2) survey. The selected samplearea is first secured and delimited with the block-off net(s).Verify that the nets are securely on the bottom with SCUBAdivers or if shallow
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