
APHA »ö»óÀº Hazen ¶Ç´Â Pt/Co »ö»óÀ̶ó°í ºÒ¸®±âµµ Çϸç, ¹Ì±¹ °øÁõ º¸°Ç Çùȸ (American Public Health Association)°ú ASTM D1209 ¿¡ ÀÇÇØ¼ Á¤ÀÇ µÈ Color IndexÀÇ ÇÑ Á¾·ù ÀÔ´Ï´Ù. Ãʱ⿡´Â Æó¼öÀÇ »ö»óÀ» Ç¥ÇöÇϱâ À§ÇØ »ç¿ë µÇ¾úÁö¸¸, ¿äÁò¿¡´Â ´Ù¾çÇÑ »ê¾÷ ºÐ¾ß·Î È®ÀåµÇ¾î »ç¿ëÇϰí ÀÖ½À´Ï´Ù. APHA Color´Â ¾×»ó ½Ã·áÀÇ È²»öÁ¤µµ¸¦ ³ªÅ¸³»¸ç, Yellowness ¿Í ÇÔ²² ¾×»ó Á¦Ç°ÀÇ Ç°ÁúÀ» Æò°¡Çϴµ¥ ÁÖ·Î »ç¿ë µÇ°í ÀÖ½À´Ï´Ù. |

[½ÅÄÚ ColorMate] |
APHA ´Â 0¿¡¼ 500±îÁöÀÇ ¹üÀ§¸¦ °¡Áö¸ç, APHA °ªÀÇ ´ÜÀ§´Â Pt/Co ¿ë¾×ÀÇ ppm ³óµµÀÔ´Ï´Ù. Áï, ³óµµÀÇ 0¿¡ °¡±î¿ï ¼ö·Ï Åõ¸íÇÑ ¹°ÀÇ »ö»ó°ú ÀÏÄ¡Çϸç APHA °ªÀÌ ³ôÀ» ¼ö·Ï ´õ £Àº Ȳ»öÀ» ³ªÅ¸³À´Ï´Ù. ½ÅÄÚÀÇ »öÂ÷°è ColorMate Àåºñ¿Í ColorMaster S/W¸¦ ÀÌ¿ëÇÏ¸é ½±°í °£ÆíÇÏ°Ô Åõ¸íÇÑ ¾×ü ½Ã·áÀÇ APHA ¹× »ö»ó, Ȳ»öµµ(Yellowness) ¸¦ ÃøÁ¤ÇÒ ¼ö ÀÖ½À´Ï´Ù.

1) Instrument Parameter

Figure 1. Measuring Set Up Parameter
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Recommended Measuring Setup
Data type : Transmittance
Special Measure : General
Average No. (1~5) : 1
Include UV (%) : 100
SCI/SCE : SCI
Recommended Color Calculation Setup
Illuminant : C
Observer Angle : 2
Recommended Color Scale Setup
CIE XYZ
Recommended Color Index Setup
APHA, Yellowness index E313 |
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2) Reagents & Apparatus |
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ColorMate Spectrophotometer |
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ColorMaster S/W |
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½Ã·á |
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20 mm Pathlength Cell |
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Transmittance Sample Cell Holder |
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Transmittance Mask |
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