Trichloroacetic acid (TCA) (60 ml o

Trichloroacetic acid (TCA) (60 ml of 6%) was used for fish
sample extraction purposes. Nash’s Reagent (Nash, 1953) was
used as an indicator to detect the absorbance of formaldehyde.
Fifteen g ammonium acetate was diluted in a 100 ml
Erlenmeyer flask with an addition of 0.3 ml of acetyl acetone
and 0.2 ml of acetic acid. Nash’s Reagent is light sensitive and
was kept in dark-glass reagent bottle at all time. A 0.1N
potassium hydroxide (KOH) and 0.1N hydrochloric acid (HCl)
was used to adjust the pH of the distillate to be in range of 6.0
to 6.5 by a pH meter.

Results (Indonesian) 2:

Asam trikloroasetat (TCA) (60 ml 6%) digunakan untuk ikan
tujuan ekstraksi sampel. Nash Reagent (Nash, 1953) telah
digunakan sebagai indikator untuk mendeteksi absorbansi formaldehida.
Lima belas g amonium asetat diencerkan dalam 100 ml
labu Erlenmeyer dengan penambahan 0,3 ml asetil aseton
dan 0,2 ml asam asetat. Nash Reagen sensitif cahaya dan
disimpan dalam botol reagen gelap-kaca di sepanjang waktu. Sebuah 0,1 N
kalium hidroksida (KOH) dan 0,1 N asam klorida (HCl)
digunakan untuk mengatur pH distilat berada di kisaran 6,0
hingga 6,5 dengan pH meter.