【文章內容簡介】 nsive American face cream which smells very nice, and I wonder if that could be the problem.B: Do you have the face cream with you?A: Yes, here it is.B: It smells very strong. Maybe you’re allergic to the perfume in it. Quite a lot of people are allergic to highly perfumed creams. I suggest you stop using it immediately. I’ll write you a prescription. Use the dosage I’ve prescribed. And if there’s no improvement within two days, e back to me. Remember, not everything expensive or foreign is necessarily better.A: All right, doctor, I’ll remember. 第九課(200774)Supplementary Reading (2)Quality Control of PharmaceuticalsBasically speaking, there are two ways for testing of drugs: chemical and physical methods. The chemical method is the basic one, such as color change of a chemical reaction for the identification and the neutralization for the assay.And the physical methods are used to measure the physical characteristics of drugs.For example, the melting range of a pharmaceutical substance is measured with the melting point apparatus.Some drugs like levodopa are optical active, it is very important to measure their optical reaction. The drug enantiomers might show pharmacological effects, it is necessary to measure the specific optical rotation for a chiral drug.In the production of a pharmaceutical substance, organic solvents are used for purification.This method for monitoring the organic residual solvents is specified in the pharmacopoeia.It is required to determine the residual organic solvents if they are toxic like benzene, chloroform, etc.It is specified in the pharmacopoeia that gas chromatography is used to determine the residual organic solvents, because the solvents are volatile.Drug substances may contain impurities.There are generally three different kinds of impurities: related substances, degradation products and foreign matter.Methods used to detect impurities should be sensitive, such as thin layer of chromatography and high performance liquid chromatography.The methods of thin layer of chromatography is for the identification, test and assay of Chinese traditional medicines with a thin layer of chromagraphy scanner.A basic high performance liquid chromatography is posed of a pump, and injection valve, a column containing stationary phase, a detector and a data processor.And the high performance liquid chromatography develops very fast because its separation function is excellent.The responses obtained form the detector can be processed to calculate the concentration of individual ponents separated.Most analytical laboratories are equipped with ultraviolet spectrophotomers.With it, the maximum or minimum absorption wavelength of a drug substance can be used for its identification.The absorption at a definite wavelength can be used for the assay by paring a reference substance of its specific absorption.The infrared spectrophotometer is very useful for the identification of drug substances.The classical Kjeldal Nitrogen Determination is used to determine the content of drug substances containing nitrogen, but most of such drug substances are determined by nonaqueous titration.I there is no suitable indicator to detect the end point, it will be specified in the pharmacopeia by potentiometry with electrodes and a potentiometer.The solid dosage forms are classified into two forms: immediaterelease and modifiedrelease forms.In order to demonstrate the drug release of the solid dosage form, dissolution tests are used.Commonly Used Medical Terms and Expressions(2) 醫(yī)院各部門admission office bandaging roomblood tank cashier’s (window) consulting room delivery roomdischarge office dispensary。 pharmacyemergency room。 emergency department emergency ward female ward inpatient departmentinfant room isolation roomisolation ward laboratorymale ward nursing departmentobservation ward operation room。 operation theateroutpatient room record roomregistery。 registration office waiting roomward二、檢查時的指令Let me have a look at your throat. Open your mo