Rinsing Properties of Inorganic Components from a
Disinfection Line-Cleaner
MBAA TQ vol. 40, no. 3, 2003, pp. 174-180 |
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Peer-Reviewed Paper
Wolfgang Kiesl and Wilfried K�rner.
Department of Geochemistry, University of Vienna, Althanstrabe 14, 1090
Vienna, Austria.
Abstract
Beverage installations are generally cleaned and sanitized
with alkaline or, optionally, oxidizing disinfection cleaners. Since any
contact of cleaner residue with the dispensed beverage has to be
avoided, a sufficient amount of rinse water is critical. In the current
study, rinsing properties and correct volumes of rinse water were
determined by using an acetic acid leaching method and inorganic trace
analysis (inductively coupled plasma mass spectrometry [ICP-MS]).
Analytical results were confirmed by means of electron beam microanalysis.
Cleaning was carried out with new stainless steel and polyethylene tubing
and an inorganic line-cleaning product at an elevated application
concentration. Results of trace analysis from the leaching solution were
compared with international drinking water and with dose that is lethal to
50% of test subjects (LD(50)) limit concentrations; correct amounts of
rinse water were derived from these data.
Keywords: alkaline cleaning agents, beverage line-cleaning,
permanganate ion, persulfate ion, polyethylene tubing, stainless steel
coolers
S�ntesis
Instalaciones de bebidas son normalmente lavados y saneados
con materiales desinfectantes alcalinos u oxidantes. En cuanto se debe
evitar cualquier contacto del residuo desinfectante con la bebida siendo
servida, es imprescindible utilizar una cantidad suficiente de agua de
enjuague. En este estudio se determinaron las propiedades de enjuague y
el volumen necesario de agua de enjuague para un producto inorg�nico de
limpieza-en-l�nea, a un nivel de concentraci�n m�s elevado de lo
normal, despu�s de limpiar una instalaci�n de acero inoxidable y
tuber�a de polietileno; esto se determin� utilizando un m�todo de
extracci�n con �cido ac�tico y an�lisis de trazas inorg�nicas
(espectrometr�a de masa de plasma acoplado inductivamente [ICP-MS, por
sus siglas en ingl�s]). Los resultados anal�ticos fueron confirmados
mediante un microan�lisis por rayos de electrones. Los resultados del
an�lisis de trazas en la soluci�n de extracci�n se compararon con
normativas internacionales para agua potable y con concentraciones
l�mites letales para 50% de sujetos testados (LD(50)); partiendo de estos
datos, se calcul� la cantidad de agua de enjuage necesario.
Palabras claves: agentes de limpieza alcalinas, limpieza de l�neas
para bebidas, el i�n de permanganato, el i�n de persulfato, tuber�a de
polietileno, enfriadores de acero inoxidable
