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當(dāng)前位置：大昌洋行（上海）有限公司（大昌華嘉科學(xué)儀器部）>>技術(shù)文章>>FlashSmart 元素分析儀-聚合物的測定
FlashSmart 元素分析儀-聚合物的測定
概述：
FlashSmart-元素分析儀允許TCD檢測器測定CHNS，火焰光度檢測器/紅外檢測器（FPD/IR）測定痕量硫，根據(jù)元素含量優(yōu)化樣品重量，獲得準(zhǔn)確、準(zhǔn)確的數(shù)據(jù)。
分析條件：
| 溫度 950°C (燃燒) | 溫度 840°C (還原) |
| 載氣流速150 ml/min | 參考氣流速100 ml/min |
| 氧氣流速 250 ml/min | 注氧時間 30 sec |
| 總測定時間 450 – 500 sec | GC 分離柱 |
樣品信息：采用聚苯乙烯標(biāo)準(zhǔn)品，以K因子為校準(zhǔn)方法進行校準(zhǔn)。使用錫容器（P/N 252 08000）對樣
品進行稱重。
| 樣品名 | Polystyrene 聚苯乙烯 | Anthracene 蒽 | Fluorene 芴 | Naphthalene 萘 |
| 理論值 C% | 91.95 | 94.34 | 93.94 | 93.71 |
| 可接受范圍 C% | 91.65 – 92.25 | 94.04 – 94.64 | 93.64 – 94.24 | 93.41 – 94.01 |
分析序列
| Run | 樣品名 | 類型 | 稱樣量 (mg) | 碳含量% |
| 1 | Polystyrene聚苯乙烯 | 標(biāo)線 | 50.255 | 91.95 |
| 2 | Polystyrene聚苯乙烯 | 標(biāo)線 | 52.225 | 91.95 |
| 3 | Polystyrene聚苯乙烯 | 樣品 | 51.654 | 91.96 |
| 4 | Anthracene蒽 | 樣品 | 55.481 | 94.29 |
| 5 | Anthracene蒽 | 樣品 | 54.438 | 94.32 |
| 6 | Anthracene蒽 | 樣品 | 55.254 | 94.27 |
| 7 | Anthracene蒽 | 樣品 | 54.207 | 94.36 |
| 8 | Anthracene蒽 | 樣品 | 55.881 | 94.36 |
| 9 | Anthracene蒽 | 樣品 | 55.504 | 94.29 |
| 10 | Anthracene蒽 | 樣品 | 55.486 | 94.34 |
| 11 | Anthracene蒽 | 樣品 | 53.521 | 94.27 |
| 12 | Anthracene蒽 | 樣品 | 53.003 | 94.28 |
| 13 | Anthracene蒽 | 樣品 | 54.491 | 94.32 |
| 14 | Naphthalen萘 | 樣品 | 54.208 | 93.69 |
| 15 | Naphthalen萘 | 樣品 | 52.592 | 93.76 |
| 16 | Naphthalen萘 | 樣品 | 54.672 | 93.67 |
| 17 | Naphthalen萘 | 樣品 | 56.361 | 93.76 |
| 18 | Naphthalen萘 | 樣品 | 54.748 | 93.79 |
| 19 | Naphthalen萘 | 樣品 | 55.778 | 93.72 |
| 20 | Naphthalen萘 | 樣品 | 55.008 | 93.73 |
| 21 | Naphthalen萘 | 樣品 | 55.945 | 93.69 |
| 22 | Naphthalen萘 | 樣品 | 53.857 | 93.72 |
| 23 | Naphthalen萘 | 樣品 | 56.825 | 93.71 |
| 24 | Fluorene芴 | 樣品 | 56.452 | 93.92 |
| 25 | Fluorene芴 | 樣品 | 54.115 | 93.94 |
| 26 | Fluorene芴 | 樣品 | 56.214 | 93.87 |
| 27 | Fluorene芴 | 樣品 | 56.485 | 93.89 |
| 28 | Fluorene芴 | 樣品 | 52.928 | 93.9 |
| 29 | Fluorene芴 | 樣品 | 56.695 | 93.88 |
| 30 | Fluorene芴 | 樣品 | 53.207 | 93.91 |
| 31 | Fluorene芴 | 樣品 | 54.498 | 93.95 |
| 32 | Fluorene芴 | 樣品 | 54.139 | 93.93 |
| 33 | Fluorene芴 | 樣品 | 55.888 | 93.88 |
| 34 | Polystyrene聚苯乙烯 | 樣品 | 52.729 | 91.85 |
5個重復(fù)的測定統(tǒng)計數(shù)據(jù)
| 化合物名稱 | Antracene (C14H10) 蒽 | Fluorene (C13H10) 芴 | Naphthalene (C10H8) 萘 | ||||||||
| Formula |
| |
| ||||||||
| | 稱重 (mg) | C 含量(mg ) | C百分比% | 稱重 (mg) | C 含量(mg ) | C百分比% | 稱重 (mg) | C 含量(mg ) | C百分比% |
| |
|
測定值
| 55.481 | 52.34 | 94.29 | 56.452 | 53.03 | 93.92 | 54.208 | 50.8 | 93.69 |
| |
| 54.438 | 51.36 | 94.32 | 54.115 | 50.84 | 93.94 | 52.292 | 49.28 | 93.76 |
| ||
| 55.254 | 52.13 | 94.27 | 56.214 | 52.81 | 93.87 | 54.672 | 51.23 | 93.67 |
| ||
| 54.207 | 51.14 | 94.36 | 56.485 | 53.06 | 93.89 | 56.361 | 52.81 | 93.76 |
| ||
| 55.881 | 52.72 | 94.36 | 52.928 | 49.72 | 93.90 | 54.748 | 51.30 | 93.79 |
| ||
| 55.486 | 52.34 | 94.34 | 53.207 | 49.98 | 93.91 | 55.008 | 51.55 | 93.73 |
| ||
| 53.521 | 50.49 | 94.27 | 54.498 | 51.19 | 93.95 | 55.945 | 52.43 | 93.69 |
| ||
| 53.003 | 50 | 94.28 | 54.139 | 50.86 | 93.93 | 53.857 | 50.47 | 93.72 |
| ||
| 54.491 | 51.41 | 94.32 | 55.888 | 52.5 | 93.88 | 56.825 | 53.25 | 93.71 |
| ||
| 平均值 | | | 94.31 | | | 93.91 | | | 93.72 |
| |
| Dev. Std. | | | 0.035 | | | 0.0275 | | | 0.0372 |
| |
| RSD% | | | 0.04 | | | 0.03 | | | 0.04 |
| |
結(jié)論：FlashSmart元素分析儀對于聚合物的測試結(jié)果非常穩(wěn)定，10次測定結(jié)果相對標(biāo)準(zhǔn)偏差RSD為 0.04%，具有非常良好的重現(xiàn)性。