Malathion

Overview

Malathion is an organophosphorous insecticide.  It is used for multiple farm products.  This kit allows an easy, rapid (within 2 hours), sensitive, quantitative, multi-sample analysis of malathion that remains in farm products.  This kit is best applied for inspection at delivery time/prior to processing or primary screening in production sites.

 

Features

          Comparison with instrumental analysis

While instrumental analysis offers high accuracy, it requires complicated and time-concuming pretreatment techniques, and sophisticated instrument operation as well as  large quantities of acetone, hexane as organic solvents.  The simpler pretreatment required for kit saves significant time.  Additionally, only a small quantity of methanol is required as an extraction solvent for analyzing malathion.

          Application examples

The figures show the comparison between standard curves with 10% methanol and reaction curves drawn with methanol extract of malathion-added farm products (diluted 10% methanol equivalent).  The overlapping curves; demonstrate the suitability of this kit for analyzing trace malathion without any interference from the original produce

 


Manufactured by HORIBA

Specifications

The following data represent the basic kit performance. For more detailed specifications, please contact us.

          Standard curve  

          Cross-reactivity

Pesticides

Cross-reactivity (%)

Malathion

100

Fenitrothion

0.9

Thiometon

0.4

Dimethoate

< 0.1

Acephate

1.3

Fenobucarb

< 0.1

Fenvalerate

< 0.1

Permethrinl

< 0.1

Within-run reproducibility (lettuce)

Samples

Average(ppb)

SD

CV(%)

A

149

13.9

9.4

B

78

4.9

6.3

C

51

4.1

8.1

n=8

          Between-analysts reproducibility (lettuce)

Samples

Average(ppb)

SD

CV(%)

A

147

10.9

7.4

B

74

6.8

9.2

C

58

6.2

10.7

n=3

          Daily reproducibility (lettuce)

Samples

Average(ppb)

SD

CV(%)

A

143

11.9

8.3

B

74

3.2

4.3

C

53

7.1

13.4

n=3

Recovery test (lettuce)

Recovery concentration (ppm)

Recovery ratio (%)

5.0

125.0±3.9

2.5

112.6±12.7

2.0

116.8±4.3

n=3
Results of within-reproducibility, daily reproducibility, between-analysts reproducibility and recovery test show that this test kit can quantitatively analyze malathion in produce.

Main kit components / shelf-life

Contents (form)

Volume

Quantity

Antibody coated plate (dry form)

8 rows x 12 columns

1 piece

Standard reagent L (freeze-dried: 15ppb)

1mL (after dissolution)

2 vials

Standard reagent H (freeze-dried: 250ppb)

1mL (after dissolution)

2 vials

Enzyme labeled Malathion reagent (freeze dried)

6mL (after dissolution)

2 vials

Washing reagent (solution: 10 times concentrated)

50mL

1 vial

Chromogenic reagent (solution)

13mL

1 vial

Stop reagent (solution)

13mL

1 vial

Shelf-life:

8 months after product

storage at 2 to 8°